${{\widetilde{\boldsymbol t}}}$ (Stop) mass limit

Limits depend on the decay mode. In ${{\mathit e}^{+}}{{\mathit e}^{-}}$ collisions they also depend on the mixing angle of the mass eigenstate ${{\widetilde{\mathit t}}_{{1}}}$ = ${{\widetilde{\mathit t}}_{{L}}}$cos $\theta _{\mathit t}$ $+$ ${{\widetilde{\mathit t}}_{{R}}}$sin$\theta _{\mathit t}$. The coupling to the ${{\mathit Z}}$ vanishes when $\theta _{\mathit t}$ = $0.98$. In the Listings below, we use $\Delta \mathit m$ ${}\equiv$ ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}–{\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ or $\Delta \mathit m$ ${}\equiv$ ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}–{\mathit m}_{{{\widetilde{\mathit \nu}}}}$, depending on relevant decay mode. See also bounds in ``${{\widetilde{\mathit q}}}~$(Squark) MASS LIMIT.''
Some earlier papers are now obsolete and have been omitted. They were last listed in our PDG 2014 edition: K. Olive, $\mathit et~al.$ (Particle Data Group), Chinese Physics C38 070001 (2014) (http://pdg.lbl.gov).

R-parity conserving ${{\widetilde{\boldsymbol t}}}$ (Stop) mass limit INSPIRE search

VALUE (GeV) CL% DOCUMENT ID TECN  COMMENT
$> 510$ 95 1
SIRUNYAN
2018B
CMS jets+$\not E_T$, Tstop4, ${\mathit m}_{{{\widetilde{\mathit t}}}}$ $−$ ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 10 GeV
$> 800$ 95 2
SIRUNYAN
2018C
CMS ${{\mathit \ell}^{\pm}}{{\mathit \ell}^{\mp}}$ + ${{\mathit b}}$-jets + $\not E_T$, Tstop1, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0
$> 750$ 95 2
SIRUNYAN
2018C
CMS ${{\mathit \ell}^{\pm}}{{\mathit \ell}^{\mp}}$ + ${{\mathit b}}$-jets + $\not E_T$, Tstop2, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ = (${\mathit m}_{{{\widetilde{\mathit t}}}}$ + ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$)/2, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0
$> 1050$ 95 2
SIRUNYAN
2018C
CMS Combination of all-hadronic, 1 ${{\mathit \ell}^{\pm}}$ and ${{\mathit \ell}^{\pm}}{{\mathit \ell}^{\mp}}$ searches, Tstop1, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0
$> 1000$ 95 2
SIRUNYAN
2018C
CMS Combination of all-hadronic, 1 ${{\mathit \ell}^{\pm}}$ and ${{\mathit \ell}^{\pm}}{{\mathit \ell}^{\mp}}$ searches, Tstop2, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ = (${\mathit m}_{{{\widetilde{\mathit t}}}}$ + ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$)/2, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0
$> 1200$ 95 2
SIRUNYAN
2018C
CMS ${{\mathit \ell}^{\pm}}{{\mathit \ell}^{\mp}}$ + ${{\mathit b}}$-jets + $\not E_T$, Tstop11, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ = 0.5 (${\mathit m}_{{{\widetilde{\mathit t}}}}$ + ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$), ${\mathit m}_{{{\widetilde{\mathit l}}}}$ = 0.5 ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ , ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0
$> 1300$ 95 2
SIRUNYAN
2018C
CMS ${{\mathit \ell}^{\pm}}{{\mathit \ell}^{\mp}}$ + ${{\mathit b}}$-jets + $\not E_T$, Tstop11, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ = 0.5 (${\mathit m}_{{{\widetilde{\mathit t}}}}$ + ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$), ${\mathit m}_{{{\widetilde{\mathit l}}}}$ = 0.95 ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ , ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0
$\text{none 460 - 1060}$ 95 2
SIRUNYAN
2018C
CMS ${{\mathit \ell}^{\pm}}{{\mathit \ell}^{\mp}}$ + ${{\mathit b}}$-jets + $\not E_T$, Tstop11, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ = 0.5 (${\mathit m}_{{{\widetilde{\mathit t}}}}$ + ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$), ${\mathit m}_{{{\widetilde{\mathit l}}}}$ = 0.05 ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ , ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0
$> 1020$ 95 3
SIRUNYAN
2018D
CMS top quark (hadronically decaying) + jets + $\not E_T$, Tstop1, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0 GeV
$> 700$ 95 4
AABOUD
2017AJ
ATLS same-sign ${{\mathit \ell}^{\pm}}{{\mathit \ell}^{\pm}}$ $/$ 3 ${{\mathit \ell}}$ + jets + $\not E_T$, Tstop11, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{2}}^{0}}}$ = ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ + 100 GeV
$>880$ 95 5
AABOUD
2017AX
ATLS ${{\mathit b}}$-jets+$\not E_T$, mixture Tstop1 and Tstop2 with BR=50$\%$, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0 GeV, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}} - {\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 1 GeV
$\text{none 250 - 1000}$ 95 6
AABOUD
2017AY
ATLS jets+$\not E_T$, Tstop1, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0 GeV
$\text{none 450 - 850}$ 95 7
AABOUD
2017AY
ATLS jets+$\not E_T$, mixture of Tstop1 and Tstop2 with BR=50$\%$, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ $−$ ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 1 GeV
$>720$ 95 8
AABOUD
2017BE
ATLS ${{\mathit \ell}^{\pm}}{{\mathit \ell}^{\mp}}$ + $\not E_T$, Tstop1, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0 GeV
$>400$ 95 9
AABOUD
2017BE
ATLS ${{\mathit \ell}^{\pm}}{{\mathit \ell}^{\mp}}$ + $\not E_T$, Tstop3, ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}−{\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 40 GeV
$>430$ 95 10
AABOUD
2017BE
ATLS ${{\mathit \ell}^{\pm}}{{\mathit \ell}^{\mp}}$ + $\not E_T$, Tstop1 (offshell ${{\mathit t}}$), ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}−{\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ $\sim{}{\mathit m}_{{{\mathit W}}}$
$>700$ 95 11
AABOUD
2017BE
ATLS ${{\mathit \ell}^{\pm}}{{\mathit \ell}^{\mp}}$ + $\not E_T$, Tstop2, ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}−{\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ = 10 GeV, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0 GeV
$> 750$ 95 12
KHACHATRYAN
2017
CMS jets+$\not E_T$,Tstop1,${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$=100GeV
$\text{none 250 - 740}$ 95 13
KHACHATRYAN
2017AD
CMS jets+${{\mathit b}}$-jets+$\not E_T$, Tstop1, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0 GeV
$> 610$ 95 14
KHACHATRYAN
2017AD
CMS jets+${{\mathit b}}$-jets+$\not E_T$, mixture Tstop1 and Tstop2 with BR=50$\%$, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 60 GeV
$>590$ 95 15
KHACHATRYAN
2017P
CMS 1 or more jets+$\not E_T$, Tstop8, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}−{\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 5 GeV, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 100 GeV
$\text{none 280 - 640}$ 95 15
KHACHATRYAN
2017P
CMS 1 or more jets+$\not E_T$, Tstop1, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0 GeV
$> 350$ 95 15
KHACHATRYAN
2017P
CMS 1 or more jets+$\not E_T$, Tstop4, 10 GeV $<$ ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}−{\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ $<$ 80 GeV
$>280$ 95 15
KHACHATRYAN
2017P
CMS 1 or more jets+$\not E_T$, Tstop3, 10 GeV $<$ ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}−{\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ $<$ 80 GeV
$>320$ 95 15
KHACHATRYAN
2017P
CMS 1 or more jets+$\not E_T$, Tstop9, 10 GeV $<$ ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}−{\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ $<$ 80 GeV
$> 240$ 95 16
KHACHATRYAN
2017S
CMS jets+$\not E_T$, Tstop4, ${\mathit m}_{{{\widetilde{\mathit t}}}}$ $−$ ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 10 GeV
$> 225$ 95 17
KHACHATRYAN
2017S
CMS jets+$\not E_T$, Tstop3, ${\mathit m}_{{{\widetilde{\mathit t}}}}$ $−$ ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 10 GeV
$> 325$ 95 18
KHACHATRYAN
2017S
CMS jets+$\not E_T$, Tstop2, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ = 0.25 ${\mathit m}_{{{\widetilde{\mathit t}}}}$ + 0.75 ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 225 GeV
$> 400$ 95 19
KHACHATRYAN
2017S
CMS jets+$\not E_T$, Tstop2, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ = 0.75 ${\mathit m}_{{{\widetilde{\mathit t}}}}$ + 0.25 ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0 GeV
$> 500$ 95 20
KHACHATRYAN
2017S
CMS jets+$\not E_T$, Tstop1, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0 GeV
$\bf{> 1120}$ 95 21
SIRUNYAN
2017AS
CMS 1${{\mathit \ell}}$+jets+$\not E_T$, Tstop1, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0 GeV
$> 1000$ 95 21
SIRUNYAN
2017AS
CMS 1${{\mathit \ell}}$+jets+$\not E_T$, Tstop2, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ = (${\mathit m}_{{{\widetilde{\mathit t}}}}$ + ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$)/2, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0 GeV
$> 980$ 95 21
SIRUNYAN
2017AS
CMS 1${{\mathit \ell}}$+jets+$\not E_T$, Tstop8, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}−{\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 5 GeV, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0 GeV
$> 1040$ 95 22
SIRUNYAN
2017AT
CMS jets+$\not E_T$, Tstop1, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0 GeV
$> 750$ 95 22
SIRUNYAN
2017AT
CMS jets+$\not E_T$, Tstop2, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ = (${\mathit m}_{{{\widetilde{\mathit t}}}}$ + ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$)/2, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0 GeV
$> 940$ 95 22
SIRUNYAN
2017AT
CMS jets+$\not E_T$, Tstop8, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}−{\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 5 GeV, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 100 GeV
$> 540$ 95 22
SIRUNYAN
2017AT
CMS jets+$\not E_T$, Tstop3, 10 GeV $<$ ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}−{\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ $<$ 80 GeV
$> 480$ 95 22
SIRUNYAN
2017AT
CMS jets+$\not E_T$, Tstop4, 10 GeV $<$ ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}−{\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ $<$ 80 GeV
$> 530$ 95 22
SIRUNYAN
2017AT
CMS jets+$\not E_T$, Tstop10, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ = (${\mathit m}_{{{\widetilde{\mathit t}}}}$ + ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$)/2, 10 GeV $<$ ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}−{\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ $<$ 80 GeV
$> 1070$ 95 23
SIRUNYAN
2017AZ
CMS ${}\geq{}$1 jets+$\not E_T$, Tstop1, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0 GeV
$> 900$ 95 23
SIRUNYAN
2017AZ
CMS ${}\geq{}$1 jets+$\not E_T$, Tstop2, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ = (${\mathit m}_{{{\widetilde{\mathit t}}}}$ + ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$)/2, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0 GeV
$> 1020$ 95 23
SIRUNYAN
2017AZ
CMS ${}\geq{}$1jets+$\not E_T$, Tstop8, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}−{\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 5 GeV, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 100 GeV
$> 540$ 95 23
SIRUNYAN
2017AZ
CMS ${}\geq{}$1 jets+$\not E_T$, Tstop4, 10 GeV $<$ ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}−{\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ $<$ 80 GeV
$\text{none 280 - 830}$ 95 24
SIRUNYAN
2017K
CMS 0, 1 ${{\mathit \ell}^{\pm}}$+jets+$\not E_T$ (combination), Tstop1, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0 GeV
$>700$ 95 24
SIRUNYAN
2017K
CMS 0, 1 ${{\mathit \ell}^{\pm}}$+jets+$\not E_T$ (combination), Tstop8, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ $−$ ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 5 GeV, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 100 GeV
$> 160$ 95 24
SIRUNYAN
2017K
CMS jets+$\not E_T$, Tstop4, 10 $<$ ${\mathit m}_{{{\widetilde{\mathit t}}}}−{\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ $<$ 80 GeV
$\text{none 230 - 960}$ 95 25
SIRUNYAN
2017P
CMS jets+$\not E_T$, Tstop1, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0 GeV
$> 990$ 95 25
SIRUNYAN
2017P
CMS jets+$\not E_T$, Tsbot1, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0 GeV
$>323$ 95 26
AABOUD
2016D
ATLS ${}\geq{}$1 jet + $\not E_T$, Tstop4, ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}−{\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 5 GeV
$\text{none, 745 - 780}$ 95 27
AABOUD
2016J
ATLS 1 ${{\mathit \ell}^{\pm}}$ + ${}\geq{}$4 jets + $\not E_T$, Tstop1, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0 GeV
$\text{> 490 - 650}$ 95 28
AAD
2016AY
ATLS 2${{\mathit \ell}}$ (including hadronic ${{\mathit \tau}}$) + $\not E_T$, Tstop5, 87 GeV$<$ ${\mathit m}_{{{\widetilde{\mathit \tau}}}}<$ ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}$
$> 700$ 95 29
KHACHATRYAN
2016AV
CMS 1 or 2 ${{\mathit \ell}^{\pm}}$ +jets+${{\mathit b}}$-jets+$\not E_T$, Tstop1, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ $<$ 250 GeV
$>700$ 95 29
KHACHATRYAN
2016AV
CMS 1 or 2 ${{\mathit \ell}^{\pm}}$ +jets+${{\mathit b}}$-jets $\not E_T$, Tstop2, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0 GeV, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ = 0.75 ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}$ + 0.25 ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$
$>775$ 95 30
KHACHATRYAN
2016BK
CMS jets+$\not E_T$,Tstop1,${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}<$200GeV
$>620$ 95 30
KHACHATRYAN
2016BK
CMS jets+$\not E_T$, Tstop2, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$=0 GeV
$> 800$ 95 31
KHACHATRYAN
2016BS
CMS jets+$\not E_T$, Tstop1, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$=0 GeV
$> 316$ 95 32
KHACHATRYAN
2016Y
CMS 1 or 2 soft ${{\mathit \ell}^{\pm}}$ + jets + $\not E_T$, Tstop3,${\mathit m}_{{{\widetilde{\mathit t}}}}−{\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$=25 GeV
$>250$ 95 33
AAD
2015CJ
ATLS B( ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit c}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ )+B( ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit b}}{{\mathit f}}{{\mathit f}^{\,'}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ ) = 1, ${\mathit m}_{{{\widetilde{\mathit t}}}}−{\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 10 GeV
$>270$ 95 33
AAD
2015CJ
ATLS ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit c}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ , ${\mathit m}_{{{\widetilde{\mathit t}}}}$ $−$ ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$=80 GeV
$\text{none, 200 - 700}$ 95 33
AAD
2015CJ
ATLS ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ , ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0
$>500$ 95 33
AAD
2015CJ
ATLS B( ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ ) + B( ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit b}}{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}$ ) = 1, ${{\widetilde{\mathit \chi}}_{{1}}^{\pm}}$ $\rightarrow$ ${{\mathit W}^{(*)}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ , ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ = 2${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ $<$ 160 GeV
$>600$ 95 33
AAD
2015CJ
ATLS ${{\widetilde{\mathit t}}_{{2}}}$ $\rightarrow$ ${{\mathit Z}}{{\widetilde{\mathit t}}_{{1}}}$ , ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}$ $−$ ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 180 GeV, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0
$>600$ 95 33
AAD
2015CJ
ATLS ${{\widetilde{\mathit t}}_{{2}}}$ $\rightarrow$ ${{\mathit h}}{{\widetilde{\mathit t}}_{{1}}}$ , ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}$ $−$ ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 180 GeV, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0
$\text{none, 172.5 - 191}$ 95 34
AAD
2015J
ATLS ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ , ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 1 GeV
$>450$ 95 35
KHACHATRYAN
2015AF
CMS ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ , ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0, ${\mathit m}_{{{\widetilde{\mathit t}}}}$ $>$ ${\mathit m}_{{{\mathit t}}}$ + ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$
$>560$ 95 36
KHACHATRYAN
2015AH
CMS ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ , ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0, ${\mathit m}_{{{\widetilde{\mathit t}}}}$ $>$ ${\mathit m}_{{{\mathit t}}}$ + ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$
$>250$ 95 37
KHACHATRYAN
2015AH
CMS ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit c}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ , ${\mathit m}_{{{\widetilde{\mathit t}}}}−{\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}<$10 GeV
$\text{none, 200 - 350}$ 95 38
KHACHATRYAN
2015L
CMS ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit q}}{{\mathit q}}$ , RPV, $\lambda {}^{''}_{312}$ $\not=$ 0
$\text{none, 200 - 385}$ 95 38
KHACHATRYAN
2015L
CMS ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit q}}{{\mathit b}}$ , RPV, $\lambda {}^{''}_{323}$ $\not=$ 0
$>730$ 95 39
KHACHATRYAN
2015X
CMS ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ , ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 100 GeV, ${\mathit m}_{{{\widetilde{\mathit t}}}}$ $>$ ${\mathit m}_{{{\mathit t}}}$ + ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$
$\text{none 400 - 645}$ 95 39
KHACHATRYAN
2015X
CMS ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ or ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit b}}{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}$ , ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 100 GeV, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ $−$ ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 5 GeV
$\text{none 270 - 645}$ 95 40
AAD
2014AJ
ATLS ${}\geq{}$4 jets + $\not E_T$, ${{\widetilde{\mathit t}}_{{1}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ , ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ $<$ 30 GeV
$\text{none 250 - 550}$ 95 40
AAD
2014AJ
ATLS ${}\geq{}$4 jets + $\not E_T$, B( ${{\widetilde{\mathit t}}_{{1}}}$ $\rightarrow$ ${{\mathit b}}{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}$ ) = 50 $\%$, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ = 2 ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ $<$ 60 GeV
$\text{none 210 - 640}$ 95 41
AAD
2014BD
ATLS ${{\mathit \ell}^{\pm}}$ + jets + $\not E_T$, ${{\widetilde{\mathit t}}_{{1}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ , ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0 GeV
$> 500$ 95 41
AAD
2014BD
ATLS ${{\mathit \ell}^{\pm}}$ + jets + $\not E_T$, ${{\widetilde{\mathit t}}_{{1}}}$ $\rightarrow$ ${{\mathit b}}{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}$ , ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ = 2 ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$, 100 GeV $<$ ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ $<$ 150 GeV
$\text{none 150 - 445}$ 95 42
AAD
2014F
ATLS ${{\mathit \ell}^{\pm}}{{\mathit \ell}^{\mp}}$ final state, ${{\widetilde{\mathit t}}_{{1}}}$ $\rightarrow$ ${{\mathit b}}{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}$ , ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}$ $−$ ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ = 10 GeV, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 1 GeV
$\text{none 215 - 530}$ 95 42
AAD
2014F
ATLS ${{\mathit \ell}^{\pm}}{{\mathit \ell}^{\mp}}$ final state, ${{\widetilde{\mathit t}}_{{1}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ , ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 1 GeV
$> 270$ 95 43
AAD
2014T
ATLS ${{\widetilde{\mathit t}}_{{1}}}$ $\rightarrow$ ${{\mathit c}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ , ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 200 GeV
$> 240$ 95 43
AAD
2014T
ATLS ${{\widetilde{\mathit t}}_{{1}}}$ $\rightarrow$ ${{\mathit c}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ ,${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}−{\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}<$85 GeV
$> 255$ 95 43
AAD
2014T
ATLS ${{\widetilde{\mathit t}}_{{1}}}$ $\rightarrow$ ${{\mathit b}}{{\mathit f}}{{\mathit f}^{\,'}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ , ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}−$ ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}\approx{}{\mathit m}_{{{\mathit b}}}$
$> 400$ 95 44
CHATRCHYAN
2014AH
CMS jets + $\not E_T$, ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ simplified model, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 50 GeV
45
CHATRCHYAN
2014R
CMS ${}\geq{}3{{\mathit \ell}^{\pm}}$, ${{\widetilde{\mathit t}}}$ $\rightarrow$ ( ${{\mathit b}}{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}$ $/$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$), ${{\widetilde{\mathit \chi}}_{{1}}^{\pm}}$ $\rightarrow$ ( ${{\mathit q}}{{\mathit q}^{\,'}}$ $/$ ${{\mathit \ell}}{{\mathit \nu}}$) ${{\widetilde{\mathit \chi}}_{{1}}^{0}}$ , ${{\widetilde{\mathit \chi}}_{{1}}^{0}}$ $\rightarrow$ ( ${{\mathit H}}$ $/$ ${{\mathit Z}}$) ${{\widetilde{\mathit G}}}$ , GMSB, natural higgsino NLSP scenario
$> 740$ 95 46
KHACHATRYAN
2014T
CMS ${{\mathit \tau}}$ + ${{\mathit b}}$-jets, RPV, $\mathit LQ\bar D$, ${{\mathit \lambda}_{{333}}^{\,'}}{}\not=$0, ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit \tau}}{{\mathit b}}$ simplified model
$> 580$ 95 46
KHACHATRYAN
2014T
CMS ${{\mathit \tau}}$ + ${{\mathit b}}$-jets, RPV, $\mathit LQ\bar D$, ${{\mathit \lambda}_{{3jk}}^{\,'}}{}\not=$0 (${{\mathit j}}{}\not=$=3), ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\widetilde{\mathit \chi}}^{\pm}}{{\mathit b}}$ , ${{\widetilde{\mathit \chi}}^{\pm}}$ $\rightarrow$ ${{\mathit q}}{{\mathit q}}{{\mathit \tau}^{\pm}}$ simplified model
• • • We do not use the following data for averages, fits, limits, etc. • • •
$>850$ 95 47
AABOUD
2017AF
ATLS 2${{\mathit \ell}}$+jets+${{\mathit b}}$-jets+$\not E_T$, Tstop6, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0
$>800$ 95 48
AABOUD
2017AF
ATLS 2${{\mathit \ell}}$+jets+${{\mathit b}}$-jets+$\not E_T$, Tstop7 with 100$\%$ decays via ${{\mathit Z}}$, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 50 GeV
$> 880$ 95 49
AABOUD
2017AF
ATLS 2${{\mathit \ell}}$+jets+${{\mathit b}}$-jets+$\not E_T$, Tstop7 with 100$\%$ decays via higgs, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 50 GeV
50
AABOUD
2017AY
ATLS jets+$\not E_T$, pMSSM-inspired
$>230$
ROLBIECKI
2015
THEO ${{\mathit W}}{{\mathit W}}$ xsection, ${{\widetilde{\mathit t}}_{{1}}}$ $\rightarrow$ ${{\mathit b}}{{\mathit W}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ , ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}$ $\simeq{}{\mathit m}_{{{\mathit b}}}$ + ${\mathit m}_{{{\mathit W}}}$ + ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$
$> 600$ 95 51
AAD
2014B
ATLS ${{\mathit Z}}+{{\mathit b}}$ $\not E_T$, ${{\widetilde{\mathit t}}_{{2}}}$ $\rightarrow$ ${{\mathit Z}}{{\widetilde{\mathit t}}_{{1}}}$ , ${{\widetilde{\mathit t}}_{{1}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ , ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}<$ 200 GeV
$> 540$ 95 51
AAD
2014B
ATLS ${{\mathit Z}}+{{\mathit b}}$ $\not E_T$, ${{\widetilde{\mathit t}}_{{1}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ , ${{\widetilde{\mathit \chi}}_{{1}}^{0}}$ $\rightarrow$ ${{\mathit Z}}{{\widetilde{\mathit G}}}$ , natural GMSB, 100 GeV $<$ ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ $<$ ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}−$10 GeV
$> 360$ 95 52
CHATRCHYAN
2014U
CMS ${{\widetilde{\mathit t}}_{{1}}}$ $\rightarrow$ ${{\mathit b}}{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}$ r, ${{\widetilde{\mathit \chi}}_{{1}}^{\pm}}$ $\rightarrow$ ${{\mathit f}}{{\mathit f}^{\,'}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ , ${{\widetilde{\mathit \chi}}_{{1}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\widetilde{\mathit G}}}$ simplified model, ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}−$ ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 5 GeV,GMSB
$> 215$ 95
CZAKON
2014
${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit t}}{{\mathit \chi}_{{1}}^{0}}$ , ${\mathit m}_{{{\mathit \chi}_{{1}}^{0}}}<$ 10 GeV
53
KHACHATRYAN
2014C
CMS ${{\widetilde{\mathit t}}_{{2}}}$ $\rightarrow$ ${{\mathit H}}{{\widetilde{\mathit t}}_{{1}}}$ or ${{\widetilde{\mathit t}}_{{2}}}$ $\rightarrow$ ${{\mathit Z}}{{\widetilde{\mathit t}}_{{1}}}$ simplified model
1  SIRUNYAN 2018B searched in 35.9 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV for the pair production of third-generation squarks in events with jets and large $\not E_T$. No significant excess above the Standard Model expectations is observed. Limits are set on the sbottom mass in the Tsbot1 simplified model, see their Figure 5, and on the stop mass in the Tstop4 simplified model, see their Figure 6.
2  SIRUNYAN 2018C searched in 35.9 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV for the pair production of top squarks in events with two oppositely charged leptons (electrons or muons), jets identified as originating from a ${{\mathit b}}$-quark and large $\not E_T$. No significant excess above the Standard Model expectations is observed. Limits are set on the stop mass in the Tstop1, Tstop2 and Tstop11 simplified models, see their Figures 11 and 12. The Tstop1 and Tstop2 results are combined with complementary searches in the all-hadronic and single lepton channels, see their Figures 13 and 14.
3  SIRUNYAN 2018D searched in 35.9 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV for events containing identified hadronically decaying top quarks, no leptons, and $\not E_T$. No significant excess above the Standard Model expectations is observed. Limits are set on the stop mass in the Tstop1 simplified model, see their Figure 8, and on the gluino mass in the Tglu3A, Tglu3B, Tglu3C and Tglu3E simplified models, see their Figure 9.
4  AABOUD 2017AJ searched in 36.1 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV for events with two same-sign or three leptons, jets and large missing transverse momentum. No significant excess above the Standard Model expectations is observed. Limits up to 700 GeV are set on the top squark mass in Tstop11 simplified models, assuming ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = ${\mathit m}_{{{\widetilde{\mathit t}}}}$ $−$ 275 GeV and ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{2}}^{0}}}$ = ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ + 100 GeV. See their Figure 4(e).
5  AABOUD 2017AX searched in 36 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV for events containing two jets identified as originating from ${{\mathit b}}$-quarks and large missing transverse momentum, with or without leptons. No excess of events above the expected level of Standard Model background was found. Exclusion limits at 95$\%$ C.L. are set on the masses of top squarks. Assuming 50$\%$ BR for Tstop1 and Tstop2 simplified models, a ${{\widetilde{\mathit t}}_{{1}}}$ mass below 880 (860) GeV is excluded for ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0 ($<$250) GeV. See their Fig. 7(b).
6  AABOUD 2017AY searched in 36.1 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV for events with at least four jets and large missing transverse momentum. No significant excess above the Standard Model expectations is observed. Limits in the range $250 - 1000$ GeV are set on the top squark mass in Tstop1 simplified models. For the first time, additional constraints are set for the region ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}$ $\sim{}{\mathit m}_{{{\mathit t}}}$ + ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$, with exclusion of the ${{\widetilde{\mathit t}}_{{1}}}$ mass range $235 - 590$ GeV. See their Figure 8.
7  AABOUD 2017AY searched in 36.1 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV for events with at least four jets and large missing transverse momentum. No significant excess above the Standard Model expectations is observed. Limits in the range 450-850 GeV are set on the top squark mass in a mixture of Tstop1 and Tstop2 simplified models with BR=50$\%$ and assuming ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ $−$ ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 1 GeV and $m_{\chi^0_1}<240\,$GeV. Constraints are given for various values of the BR. See their Figure 9.
8  AABOUD 2017BE searched in 36.1 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV for events with two opposite-charge leptons (electrons and muons) and large missing transverse momentum. No significant excess above the Standard Model expectations is observed. Limits up to 720 GeV are set on the top squark mass in Tstop1 simplified models, assuming massless neutralinos. See their Figure 9 (2-body area).
9  AABOUD 2017BE searched in 36.1 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV for events with two opposite-charge leptons (electrons and muons) and large missing transverse momentum. No significant excess above the Standard Model expectations is observed. Limits up to 400 GeV are set on the top squark mass in Tstop3 simplified models, assuming ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}−{\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 40 GeV. See their Figure 9 (4-body area).
10  AABOUD 2017BE searched in 36.1 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV for events with two opposite-charge leptons (electrons and muons) and large missing transverse momentum. No significant excess above the Standard Model expectations is observed. Limits up to 430 GeV are set on the top squark mass in Tstop1 simplified models where top quarks are offshell, assuming ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}−{\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ close to the ${{\mathit W}}$ mass. See their Figure 9 (3-body area).
11  AABOUD 2017BE searched in 36.1 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV for events with two opposite-charge leptons (electrons and muons) and large missing transverse momentum. No significant excess above the Standard Model expectations is observed. Limits up to 700 GeV are set on the top squark mass in Tstop2 simplified models, assuming ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}−{\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ = 10 GeV and massless neutralinos. See their Figure 10.
12  KHACHATRYAN 2017 searched in 2.3 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV for events containing four or more jets, no more than one lepton, and missing transverse momentum, using the razor variables (${{\mathit M}_{{R}}}$ and ${{\mathit R}^{2}}$) to discriminate between signal and background processes. No evidence for an excess over the expected background is observed. Limits are derived on the stop mass in the Tstop1 simplified model, see Fig. 17.
13  KHACHATRYAN 2017AD searched in 2.3 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV for events containing at least four jets (including ${{\mathit b}}$-jets), missing transverse momentum and tagged top quarks. No evidence for an excess over the expected background is observed. Top squark masses in the range $250 - 740$ GeV and neutralino masses up to 240 GeV are excluded at 95$\%$ C.L. See Fig. 12.
14  KHACHATRYAN 2017AD searched in 2.3 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV for events containing at least four jets (including ${{\mathit b}}$-jets), missing transverse momentum and tagged top quarks. No evidence for an excess over the expected background is observed. Limits are derived on the ${{\widetilde{\mathit t}}}$ mass in simplified models that are a mixture of Tstop1 and Tstop2 with branching fractions 50$\%$ for each of the two decay modes: top squark masses of up to 610 GeV and neutralino masses up to 190 GeV are excluded at 95$\%$ C.L. The ${{\widetilde{\mathit \chi}}_{{1}}^{\pm}}$ and the ${{\widetilde{\mathit \chi}}_{{1}}^{0}}$ are assumed to be nearly degenerate in mass, with a 5 GeV difference between their masses. See Fig. 12.
15  KHACHATRYAN 2017P searched in 2.3 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV for events with one or more jets and large $\not E_T$. No significant excess above the Standard Model expectations is observed. Limits are set on the gluino mass in the Tglu1A, Tglu2A, Tglu3A, Tglu3B, Tglu3C and Tglu3D simplified models, see their Figures 7 and 8. Limits are also set on the squark mass in the Tsqk1 simplified model, see their Fig. 7, and on the sbottom mass in the Tsbot1 simplified model, see Fig. 8. Finally, limits are set on the stop mass in the Tstop1, Tstop3, Tstop4, Tstop6 and Tstop7 simplified models, see Fig. 8.
16  KHACHATRYAN 2017S searched in 18.5 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV for events containing multiple jets and missing transverse momentum, using the ${{\mathit \alpha}_{{T}}}$ variable to discriminate between signal and background processes. No evidence for an excess over the expected background is observed. Limits are derived on the stop mass in the Tstop4 model: for $\Delta $m = ${\mathit m}_{{{\widetilde{\mathit t}}}}$ $−$ ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ equal to 10 and 80 GeV, masses of stop below 240 and 260 GeV are excluded, respectively. See their Fig.3.
17  KHACHATRYAN 2017S searched in 18.5 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV for events containing multiple jets and missing transverse momentum, using the ${{\mathit \alpha}_{{T}}}$ variable to discriminate between signal and background processes. No evidence for an excess over the expected background is observed. Limits are derived on the stop mass in the Tstop3 model: for $\Delta $m = ${\mathit m}_{{{\widetilde{\mathit t}}}}$ $−$ ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ equal to 10 and 80 GeV, masses of stop below 225 and 130 GeV are excluded, respectively. See their Fig.3.
18  KHACHATRYAN 2017S searched in 18.5 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV for events containing multiple jets and missing transverse momentum, using the ${{\mathit \alpha}_{{T}}}$ variable to discriminate between signal and background processes. No evidence for an excess over the expected background is observed. Limits are derived on the stop mass in the Tstop2 model: assuming ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ = 0.25 ${\mathit m}_{{{\widetilde{\mathit t}}}}$ + 0.75 ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$, masses of stop up to 325 GeV and masses of the neutralino up to 225 GeV are excluded. See their Fig.3.
19  KHACHATRYAN 2017S searched in 18.5 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV for events containing multiple jets and missing transverse momentum, using the ${{\mathit \alpha}_{{T}}}$ variable to discriminate between signal and background processes. No evidence for an excess over the expected background is observed. Limits are derived on the stop mass in the Tstop2 model: assuming ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ = 0.75 ${\mathit m}_{{{\widetilde{\mathit t}}}}$ + 0.25 ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$, masses of stop up to 400 GeV are excluded for low neutralino masses. See their Fig.3.
20  KHACHATRYAN 2017S searched in 18.5 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV for events containing multiple jets and missing transverse momentum, using the ${{\mathit \alpha}_{{T}}}$ variable to discriminate between signal and background processes. No evidence for an excess over the expected background is observed. Limits are derived on the stop mass in the Tstop1 model: assuming masses of stop up to 500 GeV and masses of the neutralino up to 105 GeV are excluded. See their Fig.3.
21  SIRUNYAN 2017AS searched in 35.9 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV for events with a single lepton (electron or muon), jets, and large $\not E_T$. No significant excess above the Standard Model expectations is observed. Limits are set on the stop mass in the Tstop1, Tstop2 and Tstop8 simplified models, see their Figures 5, 6 and 7.
22  SIRUNYAN 2017AT searched in 35.9 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV for direct production of top squarks in events with jets and large $\not E_T$. No significant excess above the Standard Model expectations is observed. Limits are set on the stop mass in the Tstop1, Tstop2 , Tstop3, Tstop4, Tstop8 and Tstop10 simplified models, see their Figures 9 to 14.
23  SIRUNYAN 2017AZ searched in 35.9 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV for events with one or more jets and large $\not E_T$. No significant excess above the Standard Model expectations is observed. Limits are set on the gluino mass in the Tglu1A, Tglu2A, Tglu3A simplified models, see their Figures 6. Limits are also set on the squark mass in the Tsqk1 simplified model (for single light squark and for 8 degenerate light squarks), on the sbottom mass in the Tsbot1 simplified model and on the stop mass in the Tstop1 simplified model, see their Fig. 7. Finally, limits are set on the stop mass in the Tstop2, Tstop4 and Tstop8 simplified models, see Fig. 8.
24  SIRUNYAN 2017K searched in 2.3 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV for direct production of stop or sbottom pairs in events with multiple jets and significant $\not E_T$. A second search also requires an isolated lepton and is combined with the all-hadronic search. No significant excess above the Standard Model expectations is observed. Limits are set on the stop mass in the Tstop1, Tstop8 and Tstop4 simplified models, see their Figures 7, 8 and 9 (for the Tstop4 limits, only the results of the all-hadronic search are used). Limits are also set on the sbottom mass in the Tsbot1 simplified model, see Fig. 10 (also here, only the results of the all-hadronic search are used).
25  SIRUNYAN 2017P searched in 35.9 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV for events with multiple jets and large $\not E_T$. No significant excess above the Standard Model expectations is observed. Limits are set on the gluino mass in the Tglu1A, Tglu1C, Tglu2A, Tglu3A and Tglu3D simplified models, see their Fig. 12. Limits are also set on the squark mass in the Tsqk1 simplified model, on the stop mass in the Tstop1 simplified model, and on the sbottom mass in the Tsbot1 simplified model, see Fig. 13.
26  AABOUD 2016D searched in 3.2 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV in events with an energetic jet and large missing transverse momentum. The results are interpreted as 95$\%$ C.L. limits on mass of stop decaying into a charm-quark and the lightest neutralino in scenarios with ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}−$ ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ between 5 and 20 GeV. See their Fig. 5.
27  AABOUD 2016J searched in 3.2 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV in final states with one isolated electron or muon, jets, and missing transverse momentum. For the direct stop pair production model where the stop decays via top and lightest neutralino, the results exclude at 95$\%$ C.L. stop masses between 745 GeV and 780 GeV for a massless ${{\widetilde{\mathit \chi}}_{{1}}^{0}}$ . See their Fig. 8.
28  AAD 2016AY searched in 20 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV for events with either two hadronically decaying tau leptons, one hadronically decaying tau and one light lepton, or two light leptons. No significant excess over the Standard Model expectation is found. Exclusion limits at 95$\%$ C.L. on the mass of top squarks decaying via ${{\widetilde{\mathit \tau}}}$ to a nearly massless gravitino are placed depending on ${\mathit m}_{{{\widetilde{\mathit \tau}}}}$ which is ranging from the 87 GeV LEP limit to ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}$. See their Figs. 9 and 10.
29  KHACHATRYAN 2016AV searched in 19.7 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV for events with one or two isolated leptons, hadronic jets, ${{\mathit b}}$-jets and $\not E_T$. No significant excess above the Standard Model expectations is observed. Limits are set on the stop mass in the Tstop1 and Tstop2 simplified models, see Fig. 11.
30  KHACHATRYAN 2016BK searched in 18.9 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV for events with hadronic jets and $\not E_T$. No significant excess above the Standard Model expectations is observed. Limits are set on the stop mass in the Tstop1 and Tstop2 simplified models, see Fig. 16.
31  KHACHATRYAN 2016BS searched in 2.3 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV for events with at least one energetic jet , no isolated leptons, and significant $\not E_T$, using the transverse mass variable ${{\mathit M}_{{T2}}}$ to discriminate between signal and background processes. No significant excess above the Standard Model expectations is observed. Limits are set on the stop mass in the Tstop1 simplified model, see Fig. 11 and Table 3.
32  KHACHATRYAN 2016Y searched in 19.7 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV for events with one or two soft isolated leptons, hadronic jets, and $\not E_T$. No significant excess above the Standard Model expectations is observed. Limits are set on the stop mass in the Tstop3 simplified model, see Fig. 3.
33  AAD 2015CJ searched in 20 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV for evidence of third generation squarks by combining a large number of searches covering various final states. Stop decays with and without charginos in the decay chain are considered and summaries of all ATLAS Run 1 searches for direct stop production can be found in Fig. 4 (no intermediate charginos) and Fig. 7 (intermediate charginos). Limits are set on stop masses in compressed mass regions regions, with B( ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit c}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ ) + B( ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit b}}{{\mathit f}}{{\mathit f}^{\,'}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ ) = 1, see Fig. 5. Limits are also set on stop masses assuming that both the decay ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ and ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit b}}{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}$ are possible, with both their branching rations summing up to 1, assuming ${{\widetilde{\mathit \chi}}_{{1}}^{\pm}}$ $\rightarrow$ ${{\mathit W}^{(*)}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ and ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ = 2 ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$, see Fig. 6. Limits on the mass of the next-to-lightest stop ${{\widetilde{\mathit t}}_{{2}}}$, decaying either to ${{\mathit Z}}{{\widetilde{\mathit t}}_{{1}}}$ , ${{\mathit h}}{{\widetilde{\mathit t}}_{{1}}}$ or ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ , are also presented, see Figs. 9 and 10.Interpretations in the pMSSM are also discussed, see Figs $13 - 15$.
34  AAD 2015J interpreted the measurement of spin correlations in ${{\mathit t}}{{\overline{\mathit t}}}$ production using 20.3 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV in exclusion limits on the pair production of light ${{\widetilde{\mathit t}}_{{1}}}$ squarks with masses similar to the top quark mass. The ${{\widetilde{\mathit t}}_{{1}}}$ is assumed to decay through ${{\widetilde{\mathit t}}_{{1}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ with predominantly right-handed top and a 100$\%$ branching ratio. The data are found to be consistent with the Standard Model expectations and masses between the top quark mass and 191 GeV are excluded, see their Fig. 2
35  KHACHATRYAN 2015AF searched in 19.5 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV for events with at least two energetic jets and significant $\not E_T$, using the transverse mass variable ${{\mathit M}_{{T2}}}$ to discriminate between signal and background processes. No significant excess above the Standard Model expectations is observed. Limits are set on the stop mass in simplified models where the decay ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ takes place with a branching ratio of 100$\%$, see Fig. 12. See also Table 5. Exclusions in the CMSSM, assuming tan ${{\mathit \beta}}$ = 30, $\mathit A_{0}$ = $−$2 max(${\mathit m}_{\mathrm {0}}$, ${\mathit m}_{\mathrm {1/2}}$) and ${{\mathit \mu}}$ $>$ 0, are also presented, see Fig. 15.
36  KHACHATRYAN 2015AH searched in 19.4 or 19.7 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV for events containing either a fully reconstructed top quark, or events containing dijets requiring one or both jets to originate from ${\mathit {\mathit b}}$-quarks, or events containing a mono-jet. No significant excess above the Standard Model expectations is observed. Limits are set on the stop mass in simplified models where the decay ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ takes place with a branching ratio of 100$\%$, see Fig. 9. Limits are also set in simplified models where the decays ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ and ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit b}}{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}$ , with ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}} - {\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 5 GeV, each take place with a branching ratio of 50$\%$, see Fig. 10, or with other fractions, see Fig. 11. Finally, limits are set in a simplified model where the decay ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit c}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ takes place with a branching ratio of 100$\%$, see Figs. 9, 10 and 11.
37  KHACHATRYAN 2015AH searched in 19.4 or 19.7 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV for events containing either a fully reconstructed top quark, or events containing dijets requiring one or both jets to originate from ${\mathit {\mathit b}}$-quarks, or events containing a mono-jet. No significant excess above the Standard Model expectations is observed. Limits are set on the stop mass in simplified models where the decay ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ takes place with a branching ratio of 100$\%$, see Fig. 9. Limits are also set in simplified models where the decays ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ and ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit b}}{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}$ , with ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ $−$ ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 5 GeV, each take place with a branching ratio of 50$\%$, see Fig. 10, or with other fractions, see Fig. 11. Finally, limits are set in a simplified model where the decay ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit c}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ takes place with a branching ratio of 100$\%$, see Figs. 9, 10, and 11.
38  KHACHATRYAN 2015L searched in 19.4 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV for pair production of heavy resonances decaying to pairs of jets in four jet events. No significant excess above the Standard Model expectations is observed. Limits are set on the stop mass in $\mathit R$-parity-violating supersymmetry models where ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit q}}{{\mathit q}}$ ($\lambda {}^{''}_{312}$ $\not=$ 0), see Fig. 6 (top) and ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit q}}{{\mathit b}}$ ($\lambda {}^{''}_{323}$ $\not=$ 0), see Fig. 6 (bottom).
39  KHACHATRYAN 2015X searched in 19.3 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV for events with at least two energetic jets, at least one of which is required to originate from a ${\mathit {\mathit b}}$ quark, possibly a lepton, and significant $\not E_T$, using the razor variables ($\mathit M_{R}$ and $\mathit R{}^{2}$) to discriminate between signal and background processes. No significant excess above the Standard Model expectations is observed. Limits are set on the stop mass in simplified models where the decay ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ and the decay ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit b}}{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}$ , with ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ $−$ ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 5 GeV, take place with branching ratios varying between 0 and 100$\%$, see Figs. 15, 16 and 17.
40  AAD 2014AJ searched in 20.1 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV for events containing four or more jets and large missing transverse momentum. No excess of events above the expected level of Standard Model background was found. Exclusion limits at 95$\%$ C.L. are set on the masses of third-generation squarks in simplified models which either assume that the decay ${{\widetilde{\mathit t}}_{{1}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ takes place 100$\%$ of the time, see Fig. 8, or that this decay takes place 50$\%$ of the time, while the decay ${{\widetilde{\mathit t}}_{{1}}}$ $\rightarrow$ ${{\mathit b}}{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}$ takes place the other 50$\%$ of the time, see Fig. 9.
41  AAD 2014BD searched in 20 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV for events containing one isolated lepton, jets and large missing transverse momentum. No excess of events above the expected level of Standard Model background was found. Exclusion limits at 95$\%$ C.L. are set on the masses of third-generation squarks in simplified models which either assume that the decay ${{\widetilde{\mathit t}}_{{1}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ takes place 100$\%$ of the time, see Fig. 15, or the decay ${{\widetilde{\mathit t}}_{{1}}}$ $\rightarrow$ ${{\mathit b}}{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}$ takes place 100$\%$ of the time, see Fig. $16 - 22$. For the mixed decay scenario, see Fig. 23.
42  AAD 2014F searched in 20.3 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV for events containing two leptons (${{\mathit e}}$ or ${{\mathit \mu}}$), and possibly jets and missing transverse momentum. No excess of events above the expected level of Standard Model background was found. Exclusion limits at 95$\%$ C.L. are set on the masses of third-generation squarks in simplified models which either assume that the decay ${{\widetilde{\mathit t}}_{{1}}}$ $\rightarrow$ ${{\mathit b}}{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}$ takes place 100$\%$ of the time, see Figs. $14 - 17$ and 20, or that the decay ${{\widetilde{\mathit t}}_{{1}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ takes place 100$\%$ of the time, see Figs. 18 and 19.
43  AAD 2014T searched in 20.3 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV for monojet-like and ${{\mathit c}}$-tagged events. No excess of events above the expected level of Standard Model background was found. Exclusion limits at 95$\%$ C.L. are set on the masses of third-generation squarks in simplified models which assume that the decay ${{\widetilde{\mathit t}}_{{1}}}$ $\rightarrow$ ${{\mathit c}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ takes place 100$\%$ of the time, see Fig. 9 and 10. The results of the monojet-like analysis are also interpreted in terms of stop pair production in the four-body decay ${{\widetilde{\mathit t}}_{{1}}}$ $\rightarrow$ ${{\mathit b}}{{\mathit f}}{{\mathit f}^{\,'}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ , see Fig. 11.
44  CHATRCHYAN 2014AH searched in 4.7 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 7 TeV for events with at least two energetic jets and significant $\not E_T$, using the razor variables (${{\mathit M}_{{R}}}$ and ${{\mathit R}^{2}}$) to discriminate between signal and background processes. A second analysis requires at least one of the jets to be originating from a ${{\mathit b}}$-quark. No significant excess above the Standard Model expectations is observed. Limits are set on sbottom masses in simplified models where the decay ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ takes place with a branching ratio of 100$\%$, see Figs. 28 and 29. Exclusions in the CMSSM, assuming tan $\beta $ = 10, ${{\mathit A}_{{0}}}$ = 0 and ${{\mathit \mu}}$ $>$0, are also presented, see Fig. 26.
45  CHATRCHYAN 2014R searched in 19.5 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV for events with at least three leptons (electrons, muons, taus) in the final state. No significant excess above the Standard Model expectations is observed. Limits are set on the stop mass in a natural higgsino NLSP simplified model (GMSB) where the decay ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit b}}{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}$ , with ${{\widetilde{\mathit \chi}}_{{1}}^{\pm}}$ $\rightarrow$ ( ${{\mathit q}}{{\mathit q}^{\,'}}$ $/$ ${{\mathit \ell}}{{\mathit \nu}}$) ${{\mathit H}}$ , ${{\mathit Z}}{{\widetilde{\mathit G}}}$ , takes place with a branching ratio of 100$\%$ (the particles between brackets have a soft $p_T$ spectrum), see Figs. $4 - 6$.
46  KHACHATRYAN 2014T searched in 19.7 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV for events with ${{\mathit \tau}}$-leptons and ${{\mathit b}}$-quark jets, possibly with extra light-flavour jets. No excess above the Standard Model expectations is observed. Limits are set on stop masses in RPV SUSY models with $\mathit LQ\bar D$ couplings, in two simplified models. In the first model, the decay ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\mathit \tau}}{{\mathit b}}$ is considered, with ${{\mathit \lambda}_{{333}}^{\,'}}{}\not=$0, see Fig. 3. In the second model, the decay ${{\widetilde{\mathit t}}}$ $\rightarrow$ ${{\widetilde{\mathit \chi}}^{\pm}}{{\mathit b}}$ , with the subsequent decay ${{\widetilde{\mathit \chi}}^{\pm}}$ $\rightarrow$ ${{\mathit q}}{{\mathit q}}{{\mathit \tau}^{\pm}}$ is considered, with ${{\mathit \lambda}_{{3jk}}^{\,'}}{}\not=$0 and the mass splitting between the top squark and the charging chosen to be 100 GeV, see Fig. 4.
47  AABOUD 2017AF searched in 36 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV for evidence of top squarks in events containing 2 leptons, jets, ${{\mathit b}}$-jets and $\not E_T$. In Tstop6 model, assuming ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 0 GeV, ${{\widetilde{\mathit t}}_{{1}}}$ masses up to 850 GeV are excluded for ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{2}}^{0}}}$ $>$ 200 GeV.
48  AABOUD 2017AF searched in 36 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV for evidence of ${{\widetilde{\mathit t}}_{{2}}}$ in events containing 2 leptons, jets, ${{\mathit b}}$-jets and $\not E_T$. In Tstop7 model, assuming ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 50 GeV and 100$\%$ decays via ${{\mathit Z}}$ boson, ${{\widetilde{\mathit t}}_{{2}}}$ masses up to 800 GeV are excluded. Exclusion limits are also shown as a function of the ${{\widetilde{\mathit t}}_{{2}}}$ branching ratios in their Figure 7.
49  AABOUD 2017AF searched in 36 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV for evidence of ${{\widetilde{\mathit t}}_{{2}}}$ in events containing 2 leptons, jets, ${{\mathit b}}$-jets and $\not E_T$. In Tstop7 model, assuming ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 50 GeV and 100$\%$ decays via higgs boson, ${{\widetilde{\mathit t}}_{{2}}}$ masses up to 880 GeV are excluded. Exclusion limits are also shown as a function of the ${{\widetilde{\mathit t}}_{{2}}}$ branching ratios in their Figure 7.
50  AABOUD 2017AY searched in 36.1 ${\mathrm {fb}}{}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 13 TeV for events with at least four jets and large missing transverse momentum. No significant excess above the Standard Model expectations is observed. Limits are set on the top squark mass assuming three pMSSM-inspired models. The first one, referred to as Higgsino LSP model, assumes ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}}$ $−$ ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 5 GeV and ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{2}}^{0}}}$ $−$ ${\mathit m}_{{{\widetilde{\mathit \chi}}_{{1}}^{0}}}$ = 10 GeV, with a mixture of decay modes as in Tstop1, Tstop2 and Tstop6. See their Figure 10. The second and third models are referred to as Wino NLSP and well-tempered pMSSM models, respectively. See their Figure 11 and Figure 12, and text for details on assumptions.
51  AAD 2014B searched in 20.3 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV for events containing a ${{\mathit Z}}$ boson, with or without additional leptons, plus jets originating from ${{\mathit b}}$-quarks and significant missing transverse momentum. No excess over the expected SM background is observed. Limits are derived in simplified models featuring ${{\widetilde{\mathit t}}_{{2}}}$ production, with ${{\widetilde{\mathit t}}_{{2}}}$ $\rightarrow$ ${{\mathit Z}}{{\widetilde{\mathit t}}_{{1}}}$ , ${{\widetilde{\mathit t}}_{{1}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ with a 100$\%$ branching ratio, see Fig. 4, and in the framework of natural GMSB, see Fig. 6.
52  CHATRCHYAN 2014U searched in 19.7 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV for evidence of direct pair production of top squarks, with Higgs bosons in the decay chain. The search is performed using a selection of events containing two Higgs bosons, each decaying to a photon pair, missing transverse energy and possibly ${{\mathit b}}$-quark jets. No significant excesses over the expected SM backgrounds are observed. The results are interpreted in the context of a ``natural SUSY'' simplified model where the decays ${{\widetilde{\mathit t}}_{{1}}}$ $\rightarrow$ ${{\mathit b}}{{\widetilde{\mathit \chi}}_{{1}}^{\pm}}$ , with ${{\widetilde{\mathit \chi}}_{{1}}^{\pm}}$ $\rightarrow$ ${{\mathit f}}{{\mathit f}^{\,'}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ , and ${{\widetilde{\mathit \chi}}_{{1}}^{0}}$ $\rightarrow$ ${{\mathit H}}{{\widetilde{\mathit G}}}$ , all happen with 100$\%$ branching ratio, see Fig. 4.
53  KHACHATRYAN 2014C searched in 19.5 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\sqrt {s }$ = 8 TeV for evidence of direct pair production of top squarks, with Higgs or ${{\mathit Z}}$-bosons in the decay chain. The search is performed using a selection of events containing leptons and ${{\mathit b}}$-quark jets. No significant excesses over the expected SM backgrounds are observed. The results are interpreted in the context of a simplified model with pair production of a heavier top-squark mass eigenstate ${{\widetilde{\mathit t}}_{{2}}}$ decaying to a lighter top-squark eigenstate ${{\widetilde{\mathit t}}_{{1}}}$ via either ${{\widetilde{\mathit t}}_{{2}}}$ $\rightarrow$ ${{\mathit H}}{{\widetilde{\mathit t}}_{{1}}}$ or ${{\widetilde{\mathit t}}_{{2}}}$ $\rightarrow$ ${{\mathit Z}}{{\widetilde{\mathit t}}_{{1}}}$ , followed in both cases by ${{\widetilde{\mathit t}}_{{1}}}$ $\rightarrow$ ${{\mathit t}}{{\widetilde{\mathit \chi}}_{{1}}^{0}}$ . The interpretation is performed in the region where the mass difference between the ${{\widetilde{\mathit t}}_{{1}}}$ and ${{\widetilde{\mathit \chi}}_{{1}}^{0}}$ is approximately equal to the top-quark mass, which is not probed by searches for direct ${{\widetilde{\mathit t}}_{{1}}}$ pair production, see Figs. 5 and 6. The analysis excludes top squarks with masses ${\mathit m}_{{{\widetilde{\mathit t}}_{{2}}}}<$ 575 GeV and ${\mathit m}_{{{\widetilde{\mathit t}}_{{1}}}}<$ 400 GeV at 95$\%$ C.L.
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SIRUNYAN 2018C
PR D97 032009 Search for Top Squarks and Dark Matter Particles in Opposite-Charge Dilepton Final States at $\sqrt {s }$ = 13 TeV
SIRUNYAN 2018B
PL B778 263 Search for the Pair Production of Third-Generation squarks with Two-Body Decays to a Bottom or Charm Quark and a Neutralino in Proton-Proton Collisions at $\sqrt {s }$ = 13 TeV
SIRUNYAN 2018D
PR D97 012007 Search for Supersymmetry in Proton-Proton Collisions at 13 TeV using Identified Top Quarks
AABOUD 2017BE
EPJ C77 898 Search for Direct Top Squark Pair Production in Final States with Two Leptons in $\sqrt {s }$ = 13 TeV ${{\mathit p}}{{\mathit p}}$ Collisions with the ATLAS Detector
AABOUD 2017AF
JHEP 1708 006 Search for Direct Top Squark Pair Production in Events with a Higgs or ${{\mathit Z}}$ Boson, and Missing Transverse Momentum in $\sqrt {s }$ = 13 TeV ${{\mathit p}}{{\mathit p}}$ Collisions with the ATLAS Detector
AABOUD 2017AX
JHEP 1711 195 Search for Supersymmetry in Events with ${\mathit {\mathit b}}$-Tagged Jets and Missing Transverse Momentum in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 13 TeV with the ATLAS Detector
AABOUD 2017AJ
JHEP 1709 084 Search for Supersymmetry in Final States with Two Same-Sign or Three Leptons and Jets using 36 ${\mathrm {fb}}{}^{-1}$ of $\sqrt {s }$ = 13 TeV ${{\mathit p}}{{\mathit p}}$ Collision Data with the ATLAS Detector
AABOUD 2017AY
JHEP 1712 085 Search for a Scalar Partner of the Top Quark in the Jets Plus Missing Transverse Momentum Final State at $\sqrt {s }$ = 13 TeV with the ATLAS Detector
KHACHATRYAN 2017P
EPJ C77 294 A Search for New Phenomena in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 13TeV in Final States with Missing Transverse Momentum and at Least One Jet using the $\alpha _{T}$ Variable
KHACHATRYAN 2017S
PL B767 403 Search for top squark Pair Production in Compressed-Mass-Spectrum Scenarios in Proton-Proton Collisions at $\sqrt {s }$ = 8 TeV using the $\alpha _{T}$ Variable
KHACHATRYAN 2017AD
PR D96 012004 Search for Supersymmetry in the All-Hadronic Final State using Top Quark Tagging in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 13 TeV
KHACHATRYAN 2017
PR D95 012003 Inclusive Search for Supersymmetry using Razor Variables in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 13 TeV
SIRUNYAN 2017AS
JHEP 1710 019 Search for top squark Pair Production in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 13 TeV using Single Lepton Events
SIRUNYAN 2017K
EPJ C77 327 Searches for Pair Production of Third-Generation squarks in $\sqrt {s }$ = 13 TeV ${{\mathit p}}{{\mathit p}}$ Collisions
SIRUNYAN 2017P
PR D96 032003 Search for Supersymmetry in Multijet Events with Missing Transverse Momentum in Proton-Proton Collisions at 13 TeV
SIRUNYAN 2017AZ
EPJ C77 710 Search for New Phenomena with the $\mathit M_{T2}$ Variable in the All-Hadronic Final State Produced in Proton-Proton Collisions at $\sqrt {s }$ = 13 TeV
SIRUNYAN 2017AT
JHEP 1710 005 Search for Direct Production of Supersymmetric Partners of the Top Quark in the All-Jets Final State in Proton-Proton Collisions at $\sqrt {s }$ = 13 TeV
AABOUD 2016D
PR D94 032005 Search for New Phenomena in Final States with an Energetic Jet and Large Missing Transverse Momentum in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 13 TeV using the ATLAS Detector
AABOUD 2016J
PR D94 052009 Search for Top Squarks in Final States with One Isolated Lepton, Jets, and Missing Transverse Momentum in $\sqrt {s }$ = 13 TeV ${{\mathit p}}{{\mathit p}}$ Collisions with the ATLAS Detector
AAD 2016AY
EPJ C76 81 Search for Direct Top Squark Pair Production in Final States with Two Tau Leptons in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 8 TeV with the ATLAS Detector
KHACHATRYAN 2016AV
JHEP 1607 027 Search for Direct Pair Production of Scalar Top Quarks in the Single- and Dilepton Channels in Proton-Proton Collisions at $\sqrt {s }$ = 8 TeV
KHACHATRYAN 2016Y
PL B759 9 Search for Supersymmetry in Events with Soft Leptons, Low Jet Multiplicity, and Missing Transverse Energy in Proton-Proton Collisions at $\sqrt {s }$ =8 TeV
KHACHATRYAN 2016BS
JHEP 1610 006 Search for New Physics with the MT2 Variable in all-Jets Final States Produced in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 13 TeV
KHACHATRYAN 2016BK
EPJ C76 460 Search for Direct Pair Production of Supersymmetric Top Quarks Decaying to All-Hadronic Final States in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 8 TeV
AAD 2015CJ
EPJ C75 510 ATLAS Run 1 Searches for Direct Pair Production of Third-Generation Squarks at the Large Hadron Collider
AAD 2015J
PRL 114 142001 Measurement of Spin Correlation in Top-Antitop Quark Events and Search for Top Squark Pair Production in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 8 TeV Using the ATLAS Detector
KHACHATRYAN 2015X
PR D91 052018 Search for Supersymmetry Using Razor Variables in Events with ${\mathit {\mathit b}}$-Tagged Jets in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 8 TeV
KHACHATRYAN 2015L
PL B747 98 Search for Pair-Produced Resonances Decaying to Jet Pairs in Proton-Proton Collisions at $\sqrt {s }$ = 8 TeV
KHACHATRYAN 2015AH
JHEP 1506 116 Searches for Third-Generation Squark Production in Fully Hadronic Final States in Proton-Proton Collisions at $\sqrt {s }$ = 8 TeV
KHACHATRYAN 2015AF
JHEP 1505 078 Searches for Supersymmetry using the $\mathit M_{T2}$ Variable in Hadronic Events Produced in ${{\mathit p}}{{\mathit p}}$ Collisions at 8 TeV
ROLBIECKI 2015
PL B750 247 Refining Light Stop Exclusion Limits with ${{\mathit W}^{+}}{{\mathit W}^{-}}$ Cross Sections
AAD 2014T
PR D90 052008 Search for Pair-Produced Third-Generation squarks Decaying via Charm Quarks or in Compressed Supersymmetric Scenarios in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 8 TeV with the ATLAS Detector
AAD 2014BD
JHEP 1411 118 Search for Top squark Pair Production in Final States with One Isolated Lepton, Jets, and Missing Transverse Momentum in $\sqrt {s }$ = 8 TeV ${{\mathit p}}{{\mathit p}}$ Collisions with the ATLAS Detector
AAD 2014F
JHEP 1406 124 Search for Direct top-Squark Pair Production in Final States with Two Leptons in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 8 TeV with the ATLAS detector
AAD 2014B
EPJ C74 2883 Search for Direct top squark Pair Production in Events with a ${{\mathit Z}}$ Boson, ${{\mathit b}}$-jets and Missing Transverse Momentum in $\sqrt {s }$ = 8 TeV ${{\mathit p}}{{\mathit p}}$ Collisions with the ATLAS Detector
AAD 2014AJ
JHEP 1409 015 Search for Direct Pair Production of the top squark in all-Hadronic Final States in Proton-Proton Collisions at $\sqrt {s }$ = 8 TeV with the ATLAS detector
CHATRCHYAN 2014U
PRL 112 161802 Search for Top Squark and Higgsino Production using Diphoton Higgs Boson Decays
CHATRCHYAN 2014R
PR D90 032006 Search for Anomalous Production of Events with Three or More Leptons in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 8 TeV
CHATRCHYAN 2014AH
PR D90 112001 Search for Supersymmetry with Razor Variables in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 7 TeV
CZAKON 2014
PRL 113 201803 Closing the Stop Gap
KHACHATRYAN 2014T
PL B739 229 Search for Pair Production of Third-Generation Scalar Leptoquarks and Top squarks in Proton-Proton Collisions at $\sqrt {s }$ = 8 TeV
KHACHATRYAN 2014C
PL B736 371 Search for top-Squark Pairs Decaying into Higgs or ${{\mathit Z}}$ Bosons in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 8 TeV
KHACHATRYAN 2017AZ
JHEP 1710 076 Search for Light Bosons in Decays of the 125 GeV Higgs Boson in Proton-Proton Collisions at $\sqrt {s }$ = 8 TeV