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Measurement of the associated production of a top-antitop-quark pair and a Higgs boson decaying into a $$b\bar{b}$$ pair in pp collisions at $$\sqrt{s}=13$$ TeV using the ATLAS detector at the LHC

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Measurement of the associated production of a top-antitop-quark pair and a Higgs boson decaying into a $$b\bar{b}$$ pair in pp collisions at $$\sqrt{s}=13$$ TeV using the ATLAS detector at the LHC. / The ATLAS collaboration ; Sampson, Elliot.
In: European Physical Journal C: Particles and Fields, Vol. 85, No. 2, 210, 24.02.2025.

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@article{5583132bcc3a4dd5bea3a5e0ab90f8a7,
title = "Measurement of the associated production of a top-antitop-quark pair and a Higgs boson decaying into a $$b\bar{b}$$ pair in pp collisions at $$\sqrt{s}=13$$ TeV using the ATLAS detector at the LHC",
abstract = "This paper reports the measurement of Higgs boson production in association with a $$t\bar{t}$$ t t {\^A}¯ pair in the $$H\rightarrow b\bar{b}$$ H {\^a}†{\textquoteright} b b {\^A}¯ decay channel. The analysis uses 140 fb $$^{-1}$$ - 1 of 13 $$\text {TeV}$$ TeV proton{\^a}€“proton collision data collected with the ATLAS detector at the Large Hadron Collider. The final states with one or two electrons or muons are employed. An excess of events over the expected background is found with an observed (expected) significance of 4.6 (5.4) standard deviations. The $$t\bar{t}H$$ t t {\^A}¯ H cross-section is $$\sigma _{t\bar{t}H} = 411~^{+101}_{-92}~\text {fb} = 411 \pm 54(\text {stat.})~^{+85}_{-75}(\text {syst.})~\text {fb}$$ {\"I}ƒ t t {\^A}¯ H = 411 - 92 + 101 fb = 411 {\^A}± 54 ( stat. ) - 75 + 85 ( syst. ) fb for a Higgs boson mass of 125.09 $$\text {GeV}$$ GeV , consistent with the prediction of the Standard Model of $$507^{+35}_{-50}$$ 507 - 50 + 35 fb. The cross-section is also measured differentially in bins of the Higgs boson transverse momentum within the simplified template cross-section framework.",
author = "{The ATLAS collaboration} and Hanadi Ali and Zainab Alsolami and Barton, {A. E.} and G. Borissov and Bouhova-Thacker, {E. V.} and Ruby Ferguson and James Ferrando and H. Fox and Alina Hagan and R.C.W. Henderson and R.W.L. Jones and V. Kartvelishvili and P.A. Love and E.J. Marshall and L. Meng and D. Muenstermann and Elliot Sampson and M. Smizanska and A.M. Wharton",
year = "2025",
month = feb,
day = "24",
doi = "10.1140/epjc/s10052-025-13740-x",
language = "English",
volume = "85",
journal = "European Physical Journal C: Particles and Fields",
issn = "1434-6044",
publisher = "SPRINGER",
number = "2",

}

RIS

TY - JOUR

T1 - Measurement of the associated production of a top-antitop-quark pair and a Higgs boson decaying into a $$b\bar{b}$$ pair in pp collisions at $$\sqrt{s}=13$$ TeV using the ATLAS detector at the LHC

AU - The ATLAS collaboration

AU - Ali, Hanadi

AU - Alsolami, Zainab

AU - Barton, A. E.

AU - Borissov, G.

AU - Bouhova-Thacker, E. V.

AU - Ferguson, Ruby

AU - Ferrando, James

AU - Fox, H.

AU - Hagan, Alina

AU - Henderson, R.C.W.

AU - Jones, R.W.L.

AU - Kartvelishvili, V.

AU - Love, P.A.

AU - Marshall, E.J.

AU - Meng, L.

AU - Muenstermann, D.

AU - Sampson, Elliot

AU - Smizanska, M.

AU - Wharton, A.M.

PY - 2025/2/24

Y1 - 2025/2/24

N2 - This paper reports the measurement of Higgs boson production in association with a $$t\bar{t}$$ t t ¯ pair in the $$H\rightarrow b\bar{b}$$ H → b b ¯ decay channel. The analysis uses 140 fb $$^{-1}$$ - 1 of 13 $$\text {TeV}$$ TeV proton–proton collision data collected with the ATLAS detector at the Large Hadron Collider. The final states with one or two electrons or muons are employed. An excess of events over the expected background is found with an observed (expected) significance of 4.6 (5.4) standard deviations. The $$t\bar{t}H$$ t t ¯ H cross-section is $$\sigma _{t\bar{t}H} = 411~^{+101}_{-92}~\text {fb} = 411 \pm 54(\text {stat.})~^{+85}_{-75}(\text {syst.})~\text {fb}$$ σ t t ¯ H = 411 - 92 + 101 fb = 411 ± 54 ( stat. ) - 75 + 85 ( syst. ) fb for a Higgs boson mass of 125.09 $$\text {GeV}$$ GeV , consistent with the prediction of the Standard Model of $$507^{+35}_{-50}$$ 507 - 50 + 35 fb. The cross-section is also measured differentially in bins of the Higgs boson transverse momentum within the simplified template cross-section framework.

AB - This paper reports the measurement of Higgs boson production in association with a $$t\bar{t}$$ t t ¯ pair in the $$H\rightarrow b\bar{b}$$ H → b b ¯ decay channel. The analysis uses 140 fb $$^{-1}$$ - 1 of 13 $$\text {TeV}$$ TeV proton–proton collision data collected with the ATLAS detector at the Large Hadron Collider. The final states with one or two electrons or muons are employed. An excess of events over the expected background is found with an observed (expected) significance of 4.6 (5.4) standard deviations. The $$t\bar{t}H$$ t t ¯ H cross-section is $$\sigma _{t\bar{t}H} = 411~^{+101}_{-92}~\text {fb} = 411 \pm 54(\text {stat.})~^{+85}_{-75}(\text {syst.})~\text {fb}$$ σ t t ¯ H = 411 - 92 + 101 fb = 411 ± 54 ( stat. ) - 75 + 85 ( syst. ) fb for a Higgs boson mass of 125.09 $$\text {GeV}$$ GeV , consistent with the prediction of the Standard Model of $$507^{+35}_{-50}$$ 507 - 50 + 35 fb. The cross-section is also measured differentially in bins of the Higgs boson transverse momentum within the simplified template cross-section framework.

U2 - 10.1140/epjc/s10052-025-13740-x

DO - 10.1140/epjc/s10052-025-13740-x

M3 - Journal article

VL - 85

JO - European Physical Journal C: Particles and Fields

JF - European Physical Journal C: Particles and Fields

SN - 1434-6044

IS - 2

M1 - 210

ER -