# ${{\boldsymbol t}}{{\overline{\boldsymbol t}}}{{\boldsymbol H}^{0}}$ Production INSPIRE search

Signal strengh relative to the Standard Model cross section.
VALUE CL% DOCUMENT ID TECN  COMMENT
$2.3$ ${}^{+0.7}_{-0.6}$ 1, 2
 2016 AN
LHC ${{\mathit p}}{{\mathit p}}$ , 7, 8 TeV
• • • We do not use the following data for averages, fits, limits, etc. • • •
$1.7$ $\pm0.8$ 3
 2016 AL
ATLS ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit H}^{0}}{{\mathit t}}{{\overline{\mathit t}}}{{\mathit X}}$ , 7, 8 TeV
$1.9$ ${}^{+0.8}_{-0.7}$ 2
 2016 AN
ATLS ${{\mathit p}}{{\mathit p}}$ , 7, 8 TeV
$2.9$ ${}^{+1.0}_{-0.9}$ 2
 2016 AN
CMS ${{\mathit p}}{{\mathit p}}$ , 7, 8 TeV
$1.81$ ${}^{+0.52}_{-0.50}$ ${}^{+0.58}_{-0.55}$ ${}^{+0.31}_{-0.12}$ 4
 2016 K
ATLS ${{\mathit p}}{{\mathit p}}$ , 7, 8 TeV
$1.4$ ${}^{+2.1}_{-1.4}$ ${}^{+0.6}_{-0.3}$ 5
 2015
ATLS ${{\mathit p}}{{\mathit p}}$ , 7, 8 TeV
$1.5$ $\pm1.1$ 6
 2015 BC
ATLS ${{\mathit p}}{{\mathit p}}$ , 8 TeV
$2.1$ ${}^{+1.4}_{-1.2}$ 7
 2015 T
ATLS ${{\mathit p}}{{\mathit p}}$ , 8 TeV
$1.2$ ${}^{+1.6}_{-1.5}$ 8
 2015 AN
CMS ${{\mathit p}}{{\mathit p}}$ , 8 TeV
$2.8$ ${}^{+1.0}_{-0.9}$ 9
 2014 H
CMS ${{\mathit p}}{{\mathit p}}$ , 7, 8 TeV
$9.49$ ${}^{+6.60}_{-6.28}$ 10
 2013 L
CDF ${{\mathit p}}{{\overline{\mathit p}}}$ , 1.96 TeV
$<5.8$ 95 11
 2013 X
CMS ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit H}^{0}}{{\mathit t}}{{\overline{\mathit t}}}{{\mathit X}}$
1  AAD 2016AN perform fits to the ATLAS and CMS data at $\mathit E_{{\mathrm {cm}}}$ = 7 and 8 TeV.
2  AAD 2016AN: In the fit, relative branching ratios are fixed to those in the Standard Model. The quoted signal strength is given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125.09 GeV.
3  AAD 2016AL search for ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit H}^{0}}$ production with ${{\mathit H}^{0}}$ decaying to ${{\mathit \gamma}}{{\mathit \gamma}}$ in 4.5 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 7 TeV and ${{\mathit b}}{{\overline{\mathit b}}}$ , ${{\mathit \tau}}{{\mathit \tau}}$ , ${{\mathit \gamma}}{{\mathit \gamma}}$ , ${{\mathit W}}{{\mathit W}^{*}}$ , and ${{\mathit Z}}{{\mathit Z}^{*}}$ in 20.3 fb${}^{-1}$ at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. The quoted signal strength is given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125 GeV. This paper combines the results of previous papers, and the new result of this paper only is: ${{\mathit \mu}}$ = $1.6$ $\pm2.6$.
4  AAD 2016K use up to 4.7 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 7 TeV and up to 20.3 fb${}^{-1}$ at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. The third uncertainty in the measurement is theory systematics. The quoted signal strength is given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125.36 GeV.
5  AAD 2015 search for ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit H}^{0}}$ production with ${{\mathit H}^{0}}$ decaying to ${{\mathit \gamma}}{{\mathit \gamma}}$ in 4.5 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 7 TeV and 20.3 fb${}^{-1}$ at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. The quoted result on the signal strength is equivalent to an upper limit of 6.7 at 95$\%$ CL and is given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125.4 GeV.
6  AAD 2015BC search for ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit H}^{0}}$ production with ${{\mathit H}^{0}}$ decaying to ${{\mathit b}}{{\overline{\mathit b}}}$ in 20.3 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. The corresponding upper limit is 3.4 at 95$\%$ CL. The quoted signal strength is given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125 GeV.
7  AAD 2015T search for ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit H}^{0}}$ production with ${{\mathit H}^{0}}$ resulting in multilepton final states (mainly from ${{\mathit W}}{{\mathit W}^{*}}$ , ${{\mathit \tau}}{{\mathit \tau}}$ , ${{\mathit Z}}{{\mathit Z}^{*}}$ ) in 20.3 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. The quoted result on the signal strength is given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125 GeV and corresponds to an upper limit of 4.7 at 95$\%$ CL. The data sample is independent from AAD 2015 and AAD 2015BC.
8  KHACHATRYAN 2015AN search for ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit H}^{0}}$ production with ${{\mathit H}^{0}}$ decaying to ${{\mathit b}}{{\overline{\mathit b}}}$ in 19.5 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. The quoted result on the signal strength is equivalent to an upper limit of 4.2 at 95$\%$ CL and is given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125 GeV.
9  KHACHATRYAN 2014H search for ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit H}^{0}}$ production with ${{\mathit H}^{0}}$ decaying to ${{\mathit b}}{{\overline{\mathit b}}}$ , ${{\mathit \tau}}{{\mathit \tau}}$ , ${{\mathit \gamma}}{{\mathit \gamma}}$ , ${{\mathit W}}{{\mathit W}^{*}}$ , and ${{\mathit Z}}{{\mathit Z}^{*}}$ , in 5.1 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 7 TeV and 19.7 fb${}^{-1}$ at $\mathit E_{{\mathrm {cm}}}$ = 8 TeV. The quoted signal strength is given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125.6 GeV.
10  AALTONEN 2013L combine all CDF results with $9.45 - 10.0$ fb${}^{-1}$ of ${{\mathit p}}{{\overline{\mathit p}}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 1.96 TeV. The quoted signal strength is given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125 GeV.
11  CHATRCHYAN 2013X search for ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit H}^{0}}$ production followed by ${{\mathit H}^{0}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$ , one top decaying to ${{\mathit \ell}}{{\mathit \nu}}$ and the other to either ${{\mathit \ell}}{{\mathit \nu}}$ or ${{\mathit q}}{{\overline{\mathit q}}}$ in 5.0 fb${}^{-1}$ and 5.1 fb${}^{-1}$ of ${{\mathit p}}{{\mathit p}}$ collisions at $\mathit E_{{\mathrm {cm}}}$ = 7 and 8 TeV. A limit on cross section times branching ratio which corresponds to ($4.0 - 8.6$) times the expected Standard Model cross section is given for ${\mathit m}_{{{\mathit H}^{0}}}$ = $110 - 140$ GeV at 95$\%$ CL. The quoted limit is given for ${\mathit m}_{{{\mathit H}^{0}}}$ = 125 GeV, where 5.2 is expected for no signal.
References:
EPJ C76 6 Measurements of the Higgs Boson Production and Decay Rates and Coupling Strengths using ${{\mathit p}}{{\mathit p}}$ Collision Data at $\sqrt {s }$ = 7 and 8 TeV in the ATLAS Experiment
JHEP 1608 045 Measurements of the Higgs Boson Production and Decay Rates and Constraints on its Couplings from a Combined ATLAS and CMS Analysis of the LHC ${{\mathit p}}{{\mathit p}}$ Collision Data at $\sqrt {s }$ =7 and 8 TeV
JHEP 1605 160 Search for the Standard Model Higgs Boson Decaying into ${\mathit {\mathit b}}{\mathit {\overline{\mathit b}}}$ Produced in Association with Top Quarks Decaying Hadronically in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 8 TeV with the ATLAS Detector
PL B749 519 Search for the Associated Production of the Higgs Boson with a Top Quark Pair in Multilepton Final States with the ATLAS Detector
EPJ C75 349 Search for the Standard Model Higgs Boson Produced in Association with Top Quarks and Decaying into ${\mathit {\mathit b}}{\mathit {\overline{\mathit b}}}$ in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 8 TeV with the ATLAS Detector
PL B740 222 Search for ${{\mathit H}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ Produced in Association with Top Quarks and Constraints on the Yukawa Coupling between the Top Quark and the Higgs Boson using Data Taken at 7 TeV and 8 TeV with the ATLAS Detector
JHEP 1305 145 Search for the Standard Model Higgs Boson Produced in Association with a Top-Quark Pair in ${{\mathit p}}{{\mathit p}}$ Collisions at the LHC
JHEP 1512 055 Search for High-Mass Diboson Resonances with Boson-Tagged Jets in Proton-Proton Collisions at $\sqrt {s }$ = 8 TeV with the ATLAS Detector