Constraint on the total width of the Higgs boson from Higgs boson and four-top-quark measurements in pp collisions at s = 13 TeV with the ATLAS detector

The ATLAS collaboration

doi:10.1016/j.physletb.2025.139277

Constraint on the total width of the Higgs boson from Higgs boson and four-top-quark measurements in pp collisions at s = 13 TeV with the ATLAS detector

The ATLAS collaboration

School of Physics and Astronomy

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United States Department of Energy
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King's College London
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Northern Illinois University
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Rutherford Appleton Laboratory
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Laboratório de Instrumentação e Física Experimental de Partículas
Aristotle University of Thessaloniki
High Energy Accelerator Research Organization, Tsukuba
University of Oslo
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Stockholm University
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German Electron Synchrotron
Institute of Nuclear Physics Polish Academy of Sciences
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United Arab Emirates University
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Max Planck Institute for Physics (Werner Heisenberg Institute)
SLAC National Accelerator Laboratory
Joint Laboratory of Optics
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University of Oxford
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CAS - Institute of High Energy Physics
An-Najah National University
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Academia Sinica - Institute of Physics
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Ibn Tofail University
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CSIC - Institute of Microelectronics of Barcelona
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Demokritos National Centre for Scientific Research
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ICREA
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Shinshu University
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The University of Osaka
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National University of Science and Technology POLITEHNICA Bucharest
Azerbaijan State University of Economics
Universidade de São Paulo
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Universidad de Tarapacá
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Abstract

This Letter presents a constraint on the total width of the Higgs boson (Γ_H) using a combined measurement of on-shell Higgs boson production and the production of four top quarks, which involves contributions from off-shell Higgs boson-mediated processes. This method relies on the assumption that the tree-level Higgs-top Yukawa coupling strength is the same for on-shell and off-shell Higgs boson production processes, thereby avoiding any assumptions about the relationship between on-shell and off-shell gluon fusion Higgs production rates, which were central to previous measurements. The result is based on up to 140 fb⁻¹ of proton–proton collisions at a centre-of-mass energy of s = 13 TeV collected with the ATLAS detector at the Large Hadron Collider. The observed (expected) 95% confidence level upper limit on Γ_H is 450 MeV (75 MeV). Additionally, considering the constraint on the Higgs-top Yukawa coupling from loop-induced Higgs boson production and decay processes further yields an observed (expected) upper limit of 160 MeV (55 MeV).

Original language	English
Article number	139277
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	861
DOIs	https://doi.org/10.1016/j.physletb.2025.139277
State	Published - Feb 2025

Funding

Funders	Funder number
Ministerio de Ciencia, Innovación y Universidades
BSF-NSF
Australian Research Council
DRAC
La Caixa Banking Foundation
BMWFW
Centre National pour la Recherche Scientifique et Technique
Fundação para a Ciência e a Tecnologia
European Union, Future Artificial Intelligence Research
Cooperative Research Centres, Australian Government Department of Industry
National Science Foundation
CEA-DRF
Horizon 2020, ICSC-NextGenerationEU
H2020 Marie Skłodowska-Curie Actions
INFN-CNAF
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Ministry of Science and Technology, Taiwan
Israel Science Foundation
Wallenberg Foundation
Leverhulme Trust
Baden-Württemberg Stiftung
MVZI
PROMETEO
Neubauer Family Foundation
Staatssekretariat für Bildung, Forschung und Innovation
The Slovenian Research and Innovation Agency
IDUB AGH
Generalitat de Catalunya
Instituto Nazionale di Fisica Nucleare
Austrian Science Fund
Yerevan Physics Institute
Agencia Nacional de Investigación y Desarrollo
Bundesministerium für Bildung und Forschung
Canada Foundation for Innovation
Helmholtz-Gemeinschaft
Danmarks Grundforskningsfond
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Karlsruhe Institute of Technology
Canarie
GridKA
Horizon 2020 Framework Programme
Göran Gustafssons Stiftelser
European Commission
European Cooperation in Science and Technology
EU-ESF
International Council of Shopping Centers
RGC
Fundação de Amparo à Pesquisa do Estado de São Paulo
PRIMUS
Agencia Estatal de Investigación
Institutul de Fizică Atomică
Natural Sciences and Engineering Research Council of Canada
Nella and Leon Benoziyo Center for Neurological Diseases, Weizmann Institute of Science
GenT Programmes Generalitat Valenciana, Spain
National Science and Technology Council
Irish Rugby Football Union
Cantons of Bern and Geneva
Chinese Academy of Sciences
Defence Science Institute
MSTDI
MNE
Agencia Nacional de Promoción Científica y Tecnológica
Royal Society
Minerva Foundation
CERN-CZ
National Research Foundation
Ministerstwo Edukacji i Nauki
Generalitat Valenciana
CERN
Ministerstvo Školství, Mládeže a Tělovýchovy
National Research Council Canada
Brookhaven National Laboratory
Alexander von Humboldt-Stiftung
Multiple Sclerosis Scientific Research Foundation
Caring Futures Institute, Flinders University
British Columbia Knowledge Development Fund
Ministry of Education, Culture, Sports, Science and Technology
UK Research and Innovation
Australian Education International, Australian Government
Forskningsrådet för hälsa, arbetsliv och välfärd	PRIMUS/21/SCI/017, CZ.02.01.01/00/22_008/0004632
MUCCA	CHIST-ERA-19-XAI-00
Ministry of Science and Technology of the People's Republic of China	MOST-2023YFA1609300, MOST-2023YFA1605700
GenT Programmes Generalitat Valenciana	CIDEGENT/2019/027
European Regional Development Fund	IDIFEDER/2018/048
Science and Technology Facilities Council	ST/T002816/1
Agence Nationale de la Recherche	ANR-20-CE31-0013, ANR-22-EDIR-0002, ANR-21-CE31-0013, ANR-21-CE31-0022
Norges Forskningsråd	RCN-314472
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung	RPG-2020-004, PCEFP2_194658, NIF-R1-231091
Knut och Alice Wallenbergs Stiftelse	KAW 2022.0358, KAW 2018.0157, KAW 2018.0458, KAW 2019.0447
Deutsche Forschungsgemeinschaft	DFG - CR 312/5-2, DFG - 469666862
Investissements d'Avenir Labex	ANR-11-LABX-0012
Center for Advancing Research Impact in Society	J1-3010
Carl Tryggers Stiftelse för Vetenskaplig Forskning	CTS 22:2312
U.S. Department of Energy	ECA DE-AC02-76SF00515
Japan Society for the Promotion of Science	JP23KK0245, JP22H04944, JP22H01227, JP22KK0227
European Research Council	101089007, 948254
Narodowa Agencja Wymiany Akademickiej	PPN/PPO/2020/1/00002/U/00001
H2020 European Research Council	ERC - 101002463
Ministerio de Ciencia e Innovación	PID2021-125273NB, RYC2021-031273-I, RYC2022-038164-I, PCI2022-135018-2, RYC2020-030254-I, RYC2019-028510-I
Vetenskapsrådet	2021-03651, VR 2018-00482, VR 2022-04683, VR 2023-03403, VR 2022-03845, 2023-04654
Grantová Agentura České Republiky	GACR - 24-11373S
Ministero dell’Istruzione, dell’Università e della Ricerca	PRIN - 20223N7F8K - PNRR M4.C2.1.1
Narodowe Centrum Nauki	H2020 MSCA 945339, UMO-2022/47/O/ST2/00148, UMO-2020/37/B/ST2/01043, UMO-2023/51/B/ST2/00920, UMO-2019/34/E/ST2/00393, 2021/42/E/ST2/00350, UMO-2021/40/C/ST2/00187, 2022/47/B/ST2/03059, UMO-2023/49/B/ST2/04085
FAIR-NextGenerationEU	PE00000013
North Dakota Game and Fish Department	CC-IN2P3
Fondo Nacional de Desarrollo Científico y Tecnológico	1230987, 1230812, 1240864
National Natural Science Foundation of China	12275265, 12175119, NSFC-12075060
DNSRC	IN2P3-CNRS

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10.1016/j.physletb.2025.139277

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@article{1bbdabc6316843c8ab4709fdbaf13186,

title = "Constraint on the total width of the Higgs boson from Higgs boson and four-top-quark measurements in pp collisions at s = 13 TeV with the ATLAS detector",

abstract = "This Letter presents a constraint on the total width of the Higgs boson (ΓH) using a combined measurement of on-shell Higgs boson production and the production of four top quarks, which involves contributions from off-shell Higgs boson-mediated processes. This method relies on the assumption that the tree-level Higgs-top Yukawa coupling strength is the same for on-shell and off-shell Higgs boson production processes, thereby avoiding any assumptions about the relationship between on-shell and off-shell gluon fusion Higgs production rates, which were central to previous measurements. The result is based on up to 140 fb−1 of proton–proton collisions at a centre-of-mass energy of s = 13 TeV collected with the ATLAS detector at the Large Hadron Collider. The observed (expected) 95\% confidence level upper limit on ΓH is 450 MeV (75 MeV). Additionally, considering the constraint on the Higgs-top Yukawa coupling from loop-induced Higgs boson production and decay processes further yields an observed (expected) upper limit of 160 MeV (55 MeV).",

author = "\{The ATLAS collaboration\} and G. Aad and E. Aakvaag and B. Abbott and S. Abdelhameed and K. Abeling and Abicht, \{N. J.\} and Abidi, \{S. H.\} and M. Aboelela and A. Aboulhorma and H. Abramowicz and H. Abreu and Y. Abulaiti and Acharya, \{B. S.\} and A. Ackermann and \{Adam Bourdarios\}, C. and L. Adamczyk and Addepalli, \{S. V.\} and Addison, \{M. J.\} and J. Adelman and A. Adiguzel and T. Adye and Affolder, \{A. A.\} and Y. Afik and Agaras, \{M. N.\} and J. Agarwala and A. Aggarwal and C. Agheorghiesei and F. Ahmadov and Ahmed, \{W. S.\} and C. Appelt and L. Barak and U. Barron and G. Bella and Y. Benhammou and Biswal, \{J. P.\} and B. Chen and B. Chen and E. Etzion and Frid, \{Y. Y.\} and S. Galantzan and O. Kuprash and Lutz, \{M. S.\} and R. Nayak and G. Ninio and \{Pascual Dominguez\}, L. and D. Reikher and \{Salvador Salas\}, A. and A. Soffer and Tamir, \{N. M.\} and D. Vannicola",

note = "Publisher Copyright: {\textcopyright} 2025 CERN for the benefit of the ATLAS Collaboration",

year = "2025",

month = feb,

doi = "10.1016/j.physletb.2025.139277",

language = "אנגלית",

volume = "861",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Constraint on the total width of the Higgs boson from Higgs boson and four-top-quark measurements in pp collisions at s = 13 TeV with the ATLAS detector

AU - The ATLAS collaboration

AU - Aad, G.

AU - Aakvaag, E.

AU - Abbott, B.

AU - Abdelhameed, S.

AU - Abeling, K.

AU - Abicht, N. J.

AU - Abidi, S. H.

AU - Aboelela, M.

AU - Aboulhorma, A.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abulaiti, Y.

AU - Acharya, B. S.

AU - Ackermann, A.

AU - Adam Bourdarios, C.

AU - Adamczyk, L.

AU - Addepalli, S. V.

AU - Addison, M. J.

AU - Adelman, J.

AU - Adiguzel, A.

AU - Adye, T.

AU - Affolder, A. A.

AU - Afik, Y.

AU - Agaras, M. N.

AU - Agarwala, J.

AU - Aggarwal, A.

AU - Agheorghiesei, C.

AU - Ahmadov, F.

AU - Ahmed, W. S.

AU - Appelt, C.

AU - Barak, L.

AU - Barron, U.

AU - Bella, G.

AU - Benhammou, Y.

AU - Biswal, J. P.

AU - Chen, B.

AU - Etzion, E.

AU - Frid, Y. Y.

AU - Galantzan, S.

AU - Kuprash, O.

AU - Lutz, M. S.

AU - Nayak, R.

AU - Ninio, G.

AU - Pascual Dominguez, L.

AU - Reikher, D.

AU - Salvador Salas, A.

AU - Soffer, A.

AU - Tamir, N. M.

AU - Vannicola, D.

PY - 2025/2

Y1 - 2025/2

N2 - This Letter presents a constraint on the total width of the Higgs boson (ΓH) using a combined measurement of on-shell Higgs boson production and the production of four top quarks, which involves contributions from off-shell Higgs boson-mediated processes. This method relies on the assumption that the tree-level Higgs-top Yukawa coupling strength is the same for on-shell and off-shell Higgs boson production processes, thereby avoiding any assumptions about the relationship between on-shell and off-shell gluon fusion Higgs production rates, which were central to previous measurements. The result is based on up to 140 fb−1 of proton–proton collisions at a centre-of-mass energy of s = 13 TeV collected with the ATLAS detector at the Large Hadron Collider. The observed (expected) 95% confidence level upper limit on ΓH is 450 MeV (75 MeV). Additionally, considering the constraint on the Higgs-top Yukawa coupling from loop-induced Higgs boson production and decay processes further yields an observed (expected) upper limit of 160 MeV (55 MeV).

AB - This Letter presents a constraint on the total width of the Higgs boson (ΓH) using a combined measurement of on-shell Higgs boson production and the production of four top quarks, which involves contributions from off-shell Higgs boson-mediated processes. This method relies on the assumption that the tree-level Higgs-top Yukawa coupling strength is the same for on-shell and off-shell Higgs boson production processes, thereby avoiding any assumptions about the relationship between on-shell and off-shell gluon fusion Higgs production rates, which were central to previous measurements. The result is based on up to 140 fb−1 of proton–proton collisions at a centre-of-mass energy of s = 13 TeV collected with the ATLAS detector at the Large Hadron Collider. The observed (expected) 95% confidence level upper limit on ΓH is 450 MeV (75 MeV). Additionally, considering the constraint on the Higgs-top Yukawa coupling from loop-induced Higgs boson production and decay processes further yields an observed (expected) upper limit of 160 MeV (55 MeV).

UR - https://www.scopus.com/pages/publications/85215925159

U2 - 10.1016/j.physletb.2025.139277

DO - 10.1016/j.physletb.2025.139277

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:85215925159

SN - 0370-2693

VL - 861

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

M1 - 139277

ER -

Constraint on the total width of the Higgs boson from Higgs boson and four-top-quark measurements in pp collisions at s = 13 TeV with the ATLAS detector

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