Measurement of the associated production of a top-antitop-quark pair and a Higgs boson decaying into a bb¯ pair in pp collisions at √s=13 TeV using the ATLAS detector at the LHC

ATLAS Collaboration

doi:10.1140/epjc/s10052-025-13740-x

Measurement of the associated production of a top-antitop-quark pair and a Higgs boson decaying into a bb¯ pair in pp collisions at √s=13 TeV using the ATLAS detector at the LHC

ATLAS Collaboration

iThemba Labs
Department of Physics
University of South Africa
University of Zululand
Cadi Ayyad University
Physikalisches Institut
University of Freiburg
Heidelberg University
Departamento de Engenharia Elétrica
Universidade Federal de Juiz de Fora
Department of Physics and Astronomy
University College London
School of Physics and Astronomy
University of Manchester
Departamento de Física Teórica y del Cosmos
University of Granada
CERN
Columbia University
Demokritos National Centre for Scientific Research
University of Sheffield
Harvard University
University of Bologna
National Institute for Nuclear Physics
University of Belgrade
University of Siegen
Indiana University Bloomington
CAS - Institute of High Energy Physics
University of Science and Technology of China
Shanghai Jiao Tong University
University of Michigan, Ann Arbor
Shandong University
University of Arizona
Nanjing University
Tsinghua University
University of Illinois at Urbana-Champaign
SLAC National Accelerator Laboratory
University of California at Santa Cruz
University of Washington
Université Paris-Saclay
Lawrence Berkeley National Laboratory
The University of Tokyo
CNRS

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

This paper reports the measurement of Higgs boson production in association with a tt¯ pair in the H→bb¯ decay channel. The analysis uses 140 fb-1 of 13 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 tt¯H cross-section is σtt¯H=411-92+101fb=411±54(stat.)-75+85(syst.)fb for a Higgs boson mass of 125.09 GeV, consistent with the prediction of the Standard Model of 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.

Original language	English
Article number	210
Journal	European Physical Journal C
Volume	85
Issue number	2
DOIs	https://doi.org/10.1140/epjc/s10052-025-13740-x
State	Published - Feb 2025

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@article{b4fe1ecb53f043aea56f11749de8f3f7,

title = "Measurement of the associated production of a top-antitop-quark pair and a Higgs boson decaying into a bb¯ pair in pp collisions at √s=13 TeV using the ATLAS detector at the LHC",

abstract = "This paper reports the measurement of Higgs boson production in association with a tt¯ pair in the H→bb¯ decay channel. The analysis uses 140 fb-1 of 13 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 tt¯H cross-section is σtt¯H=411-92+101fb=411±54(stat.)-75+85(syst.)fb for a Higgs boson mass of 125.09 GeV, consistent with the prediction of the Standard Model of 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 = "\{ATLAS Collaboration\} and L. Zwalinski and W. Zou and O. Zormpa and Zorbas, \{T. G.\} and K. Zoch and A. Zoccoli and L. {\v Z}ivkovi{\'c} and M. Ziolkowski and J. Zinsser and Zimine, \{N. I.\} and K. Zhukov and X. Zhuang and Y. Zhu and Y. Zhu and X. Zhu and J. Zhu and Zhu, \{C. G.\} and Y. Zhou and Y. Zhou and Y. Zhou and N. Zhou and H. Zhou and B. Zhou and D. Zhong and Z. Zheng and X. Zheng and K. Zheng and J. Zheng and A. Zhemchugov and Z. Zhao and Z. Zhao and Y. Zhao and T. Zhao and H. Zhao and Z. Zhang and Z. Zhang and Z. Zhang and Y. Zhang and Y. Zhang and Y. Zhang and X. Zhang and X. Zhang and T. Zhang and S. Zhang and D. Tsybychev and G. Piacquadio and J. Jia and J. Hobbs and V. Dao and H. Arnold",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2025.",

year = "2025",

month = feb,

doi = "10.1140/epjc/s10052-025-13740-x",

language = "English",

volume = "85",

journal = "European Physical Journal C",

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AU - ATLAS Collaboration

AU - Zwalinski, L.

AU - Zou, W.

AU - Zormpa, O.

AU - Zorbas, T. G.

AU - Zoch, K.

AU - Zoccoli, A.

AU - Živković, L.

AU - Ziolkowski, M.

AU - Zinsser, J.

AU - Zimine, N. I.

AU - Zhukov, K.

AU - Zhuang, X.

AU - Zhu, Y.

AU - Zhu, X.

AU - Zhu, J.

AU - Zhu, C. G.

AU - Zhou, Y.

AU - Zhou, N.

AU - Zhou, H.

AU - Zhou, B.

AU - Zhong, D.

AU - Zheng, Z.

AU - Zheng, X.

AU - Zheng, K.

AU - Zheng, J.

AU - Zhemchugov, A.

AU - Zhao, Z.

AU - Zhao, Y.

AU - Zhao, T.

AU - Zhao, H.

AU - Zhang, Z.

AU - Zhang, Y.

AU - Zhang, X.

AU - Zhang, T.

AU - Zhang, S.

AU - Tsybychev, D.

AU - Piacquadio, G.

AU - Jia, J.

AU - Hobbs, J.

AU - Dao, V.

AU - Arnold, H.

PY - 2025/2

Y1 - 2025/2

N2 - This paper reports the measurement of Higgs boson production in association with a tt¯ pair in the H→bb¯ decay channel. The analysis uses 140 fb-1 of 13 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 tt¯H cross-section is σtt¯H=411-92+101fb=411±54(stat.)-75+85(syst.)fb for a Higgs boson mass of 125.09 GeV, consistent with the prediction of the Standard Model of 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 tt¯ pair in the H→bb¯ decay channel. The analysis uses 140 fb-1 of 13 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 tt¯H cross-section is σtt¯H=411-92+101fb=411±54(stat.)-75+85(syst.)fb for a Higgs boson mass of 125.09 GeV, consistent with the prediction of the Standard Model of 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.

UR - https://www.scopus.com/pages/publications/105012447958

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

M3 - Article

AN - SCOPUS:105012447958

SN - 1434-6044

VL - 85

JO - European Physical Journal C

JF - European Physical Journal C

IS - 2

M1 - 210

ER -

Measurement of the associated production of a top-antitop-quark pair and a Higgs boson decaying into a bb¯ pair in pp collisions at √s=13 TeV using the ATLAS detector at the LHC

Abstract

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