HIGGS COUPLINGS

top Yukawa coupling (${{\mathit \kappa}_{{{t}}}}$) INSPIRE search

S126YTC
VALUE CL% DOCUMENT ID TECN  COMMENT
• • • We do not use the following data for averages, fits, limits, etc. • • •
1
HAYRAPETYAN
2025R
CMS ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit H}}$, ${{\mathit t}}{{\mathit H}}$, ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$ , 13 TeV
$0.84$ ${}^{+0.30}_{-0.46}$ 2
AAD
2024J
ATLS ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit H}}$, ${{\mathit t}}{{\mathit H}}$, ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$ , 13 TeV
$<1.9$ 95 3
AAD
2023BC
ATLS ${{\mathit p}}{{\mathit p}}$, 13 TeV
$\text{0.87 - 1.20}$ 95 4
AAD
2023Y
ATLS ${{\mathit p}}{{\mathit p}}$, 13 TeV
$\text{0.65 - 1.25}$ 95 5
AAD
2023Y
ATLS ${{\mathit p}}{{\mathit p}}$, 13 TeV
$\text{-1.09 - -0.74 or 0.77 - 1.3}$ 95 6
TUMASYAN
2023P
CMS ${{\mathit p}}{{\mathit p}}$, 13 TeV
$\text{0.86 - 1.26}$ 6, 7
TUMASYAN
2023P
CMS ${{\mathit p}}{{\mathit p}}$, 13 TeV
$0.95$ $\pm0.07$ 8, 9
ATLAS
2022
ATLS ${{\mathit p}}{{\mathit p}}$, 13 TeV
$0.94$ $\pm0.11$ 8, 10
ATLAS
2022
ATLS ${{\mathit p}}{{\mathit p}}$, 13 TeV
$0.94$ $\pm0.11$ 8, 11
ATLAS
2022
ATLS ${{\mathit p}}{{\mathit p}}$, 13 TeV
$0.95$ ${}^{+0.07}_{-0.08}$ 12, 13
CMS
2022
CMS ${{\mathit p}}{{\mathit p}}$, 13 TeV
$1.01$ ${}^{+0.11}_{-0.10}$ 12, 14
CMS
2022
CMS ${{\mathit p}}{{\mathit p}}$, 13 TeV
$\text{-0.9 - -0.7 or 0.7 - 1.1}$ 95 15
SIRUNYAN
2021R
CMS ${{\mathit p}}{{\mathit p}}$, 13 TeV
$<1.7$ 95 16
SIRUNYAN
2020C
CMS ${{\mathit p}}{{\mathit p}}$, 13 TeV
$<1.67$ 95 17
SIRUNYAN
2019BY
CMS ${{\mathit p}}{{\mathit p}}$, 13 TeV
$<2.1$ 95 18
SIRUNYAN
2018BU
CMS ${{\mathit p}}{{\mathit p}}$, 13 TeV
1  HAYRAPETYAN 2025R measure the ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit H}}$ and ${{\mathit t}}{{\mathit H}}$ productions with ${{\mathit H}}$ $\rightarrow$ ${{\mathit b}}{{\overline{\mathit b}}}$ decay channel using 138 fb${}^{-1}$ of data at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. Two-dimensional likelihood scan of (${{\mathit \kappa}_{{{t}}}}$, ${{\mathit \kappa}_{{{V}}}}$) is shown in their Fig. 15. Assuming ${{\mathit \kappa}_{{{V}}}}$ = 1, ${{\mathit \kappa}_{{{t}}}}$ is measured to be [$-0.55$, $-0.24$] and [$0.20$, $0.72$] at 68$\%$ CL.
2  AAD 2024J measure the $\mathit CP$ structure of the top Yukawa coupling using 139 fb${}^{-1}$ of data at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. The top Yukawa coupling strength modifier $\kappa _{t}$ is measured with the $\mathit CP$-mixing angle $\alpha $. See their Fig. 3.
3  AAD 2023BC measure the production of four top quarks with same-sign and multilepton final states with 140 fb${}^{-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 Standard Model value, yielding $\vert {{\mathit y}_{{{t}}}}/{{\mathit y}_{{{t}}}^{SM}}\vert $ $<$ 1.9 (see their erratum) at 95$\%$ CL. See their Fig. 8 as a function of $\kappa _{t}$ and $\mathit CP$-mixing angle.
4  AAD 2023Y constrain ${{\mathit \kappa}_{{{t}}}}$ from Higgs production rates with ${{\mathit H}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ with 139 fb${}^{-1}$ ${{\mathit p}}{{\mathit p}}$ collision data at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. The quoted result is obtained assuming the SM loop structure in ${{\mathit g}}$ ${{\mathit g}}$ $\rightarrow$ ${{\mathit H}}$ and ${{\mathit H}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$. See their Fig. 14.
5  AAD 2023Y constrain ${{\mathit \kappa}_{{{t}}}}$ from Higgs production rates with ${{\mathit H}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ with 139 fb${}^{-1}$ ${{\mathit p}}{{\mathit p}}$ collision data at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. The quoted result is obtained assuming effective couplings ${{\mathit \kappa}_{{{gluon}}}}$ and ${{\mathit \kappa}_{{{\gamma}}}}$ for ${{\mathit g}}$ ${{\mathit g}}$ $\rightarrow$ ${{\mathit H}}$ and ${{\mathit H}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$, respectively. See their Fig. 14.
6  TUMASYAN 2023P constrain ${{\mathit \kappa}_{{{t}}}}$ from ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit H}}$ and ${{\mathit t}}{{\mathit H}}$ decaying ${{\mathit H}}$ $\rightarrow$ ${{\mathit W}}{{\mathit W}^{*}}$ and ${{\mathit H}}$ $\rightarrow$ ${{\mathit \tau}}{{\mathit \tau}}$ (multilepton decay mode) with 138 fb${}^{-1}$ ${{\mathit p}}{{\mathit p}}$ collision data at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. The ${{\mathit \kappa}_{{{t}}}}$ is obtained by fixing ${{\widetilde{\mathit \kappa}}_{{{t}}}}$ = 0 and other couplings (${{\mathit \kappa}_{{{V}}}}$ etc.) to the SM values. See their Fig. 9 for 2-dim contours and Table 6.
7  The quoted result is obtained by combining with other ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit H}}$ decaying ${{\mathit H}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ (SIRUNYAN 2020AS) and ${{\mathit H}}$ $\rightarrow$ 4 ${{\mathit \ell}}$ (SIRUNYAN 2021AE) and ${{\widetilde{\mathit \kappa}}_{{{t}}}}$ = 0. See their Fig. 12 for 2-dim contours and Table$~$7.
8  ATLAS 2022 report combined results (see their Extended Data Table 1) using up to 139 fb${}^{-1}$ of data at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV, assuming ${\mathit m}_{{{\mathit H}}}$ = 125.09 GeV.
9  All modifiers($\kappa $) $>$ 0, and $\kappa _{c}$ = $\kappa _{t}$ (${{\mathit B}}_{inv}$ =${{\mathit B}}_{undetected}$ = 0) are assumed. Only SM particles assume to contribute to the loop-induced processes.See their Fig. 5, which shows both $\kappa _{c}$ = $\kappa _{t}$ and$\kappa _{c}$ floating.
10  ${{\mathit B}}_{inv}$ = ${{\mathit B}}_{undetected}$ = 0 is assumed. Coupling strength modifiers including effective photon, ${{\mathit Z}}{{\mathit \gamma}}$ and gluon are measured. See their Fig. 6.
11  ${{\mathit B}}_{inv}$ floating, ${{\mathit B}}_{undetected}{}\geq{}$ 0, and $\kappa _{V}{}\leq{}$ 1 are assumed. Coupling strength modifiers including effective photon, ${{\mathit Z}}{{\mathit \gamma}}$ and gluon are measured. See their Fig. 6.
12  CMS 2022 report combined results (see their Extended Data Table 2) using up to 138 fb${}^{-1}$ of data at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV, assuming ${\mathit m}_{{{\mathit H}}}$ = 125.38 GeV.
13  Only SM particles assume to contribute to the loop-induced processes. See their Fig. 3 right.
14  Coupling strength modifiers including effective photon, ${{\mathit Z}}{{\mathit \gamma}}$ and gluon are measured. See their Fig. 4 left.
15  SIRUNYAN 2021R constrain the ratio of the top quark Yukawa coupling ${{\mathit y}_{{{t}}}}$ to its Standard Model value from ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit H}}$ and ${{\mathit t}}{{\mathit H}}$ production rates using 137 fb${}^{-1}$ ${{\mathit p}}{{\mathit p}}$ collision data at $\mathit E_{{\mathrm {cm}}}$ = 13 TeV. Assuming a SM Higgs couplings to $\tau $'s, the joint interval $-0.9$ $<$ ${{\mathit \kappa}_{{{t}}}}(={{\mathit y}_{{{t}}}}/{{\mathit y}_{{{t}}}^{SM}}$) $<$ $-0.7$ and 0.7 $<$ ${{\mathit \kappa}_{{{t}}}}$ $<$ 1.1 is obtained at 95$\%$ CL (see their Fig. 17).
16  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 Standard Model value 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.
17  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).
18  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:
HAYRAPETYAN 2025R
JHEP 2502 097 Measurement of the $\mathrm{t\bar{t}}$H and tH production rates in the H $\to$$\mathrm{b\bar{b}}$ decay channel using proton-proton collision data at $\sqrt{s}$ = 13 TeV
AAD 2024J
PL B849 138469 Probing the $CP$ nature of the top-Higgs Yukawa coupling in $t\bar{t}H$ and $tH$ events with $H \to b\bar{b}$ decays using the ATLAS detector at the LHC
AAD 2023Y
JHEP 2307 088 Measurement of the properties of Higgs boson production at $\sqrt{s} = 13$ TeV in the $H\to\gamma\gamma$ channel using $139$ fb$^{-1}$ of $pp$ collision data with the ATLAS experiment
AAD 2023BC
EPJ C83 496 Observation of four-top-quark production in the multilepton final state with the ATLAS detector
Also
EPJ C84 156 (errat.) Observation of four-top-quark production in the multilepton final state with the ATLAS detector
TUMASYAN 2023P
JHEP 2307 092 Search for $CP$ violation in ttH and tH production in multilepton channels in proton-proton collisions at $\sqrt{s}$ = 13 TeV
ATLAS 2022
NAT 607 52 A detailed map of Higgs boson interactions by the ATLAS experiment ten years after the discovery
Also
NAT 612 E24 (errat.) A detailed map of Higgs boson interactions by the ATLAS experiment ten years after the discovery
CMS 2022
NAT 607 60 A portrait of the Higgs boson by the CMS experiment ten years after the discovery
SIRUNYAN 2021R
EPJ C81 378 Measurement of the Higgs boson production rate in association with top quarks in final states with electrons, muons, and hadronically decaying tau leptons at $\sqrt{s} =$ 13 TeV
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} $