# top Yukawa coupling INSPIRE search

VALUE CL% DOCUMENT ID TECN  COMMENT
$\bf{<1.7}$ 95 1
 2020 C
CMS ${{\mathit p}}{{\mathit p}}$ , 13 TeV
• • • We do not use the following data for averages, fits, limits, etc. • • •
$<1.67$ 95 2
 2019 BY
CMS ${{\mathit p}}{{\mathit p}}$ , 13 TeV
$<2.1$ 95 3
 2018 BU
CMS ${{\mathit p}}{{\mathit p}}$ , 13 TeV
1  SIRUNYAN 2020C search for the production of four top quarks with same-sign and multilepton final states with 137 fb${}^{-1}$ ${{\mathit p}}{{\mathit p}}$ collision data at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. The results constraint the ratio of the top quark Yukawa coupling ${{\mathit y}_{{t}}}$ to its the Standard Model by comparing to the central value of a theoretical prediction (see their Refs. [1-2]), yielding $\vert {{\mathit y}_{{t}}}/{{\mathit y}_{{t}}^{SM}}\vert$ $<$ 1.7 at 95$\%$ CL. See their Fig. 5.
2  SIRUNYAN 2019BY measure the top quark Yukawa coupling from ${{\mathit t}}{{\overline{\mathit t}}}$ kinematic distributions, the invariant mass of the top quark pair and the rapidity difference between ${{\mathit t}}$ and ${{\overline{\mathit t}}}$, in the ${{\mathit \ell}}$+jets final state with 35.8 fb${}^{-1}$ ${{\mathit p}}{{\mathit p}}$ collision data at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. The results constraint the ratio of the top quark Yukawa coupling to its the Standard Model to be $1.07$ ${}^{+0.34}_{-0.43}$ with an upper limit of 1.67 at 95$\%$ CL (see their Table III).
3  SIRUNYAN 2018BU search for the production of four top quarks with same-sign and multilepton final states with 35.9 fb${}^{-1}$ ${{\mathit p}}{{\mathit p}}$ collision data at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. The results constraint the ratio of the top quark Yukawa coupling ${{\mathit y}_{{t}}}$ to its the Standard Model by comparing to the central value of a theoretical prediction (see their Ref. [16]), yielding $\vert {{\mathit y}_{{t}}}/{{\mathit y}_{{t}}^{SM}}\vert$ $<$ 2.1 at 95$\%$ CL.
References:
 SIRUNYAN 2020C
EPJ C80 75 Search for production of four top quarks in final states with same-sign or multiple leptons in proton-proton collisions at $\sqrt{s}=$ 13 TeV
 SIRUNYAN 2019BY
PR D100 072007 Measurement of the top quark Yukawa coupling from $\mathrm{t\bar{t}}$ kinematic distributions in the lepton+jets final state in proton-proton collisions at $\sqrt{s} =$ 13 TeV
 SIRUNYAN 2018BU
EPJ C78 140 Search for standard model production of four top quarks with same-sign and multilepton final states in proton?proton collisions at $\sqrt{s} = 13\,\text {TeV}$