Study of Higgs boson pair production in the HH→bb‾γγ final state with 308 fb−1 of data collected at s= 13 TeV and 13.6 TeV by the ATLAS experiment

L.ZwalinskiThe ATLAS Collaboration

doi:10.1016/j.physletb.2026.140280

Study of Higgs boson pair production in the HH→bb‾γγ final state with 308 fb−1 of data collected at s= 13 TeV and 13.6 TeV by the ATLAS experiment

L.ZwalinskiThe ATLAS Collaboration

Aix-Marseille Université
University of Bergen
University of Oklahoma
New York University
Georg-August-Universität Göttingen
pro3dure medical GmbH
Brookhaven National Laboratory
Southern Methodist University
University Mohammed V in Rabat
Tel Aviv University
New York University (NYU)
Sezione INFN di Roma La Sapienza
ICTP
Heidelberg University
Laboratoire d’Annecy-Le-Vieux de Physique des Particules (CNRS/IN2P3/LAPP)
Univ of Mining and Metallurgy
Stanford University
University of Manchester
USA
Istanbul University
Rutherford Appleton Laboratory
University of California, Santa Cruz
University of Chicago
Dept. d'Estructura I Constituents De La Matèria and IFAE
Johannes Gutenberg University
'Al. I. Cuza' University
European Organization for Nuclear Research
University of London
Zhengzhou University
INFN Sezione di Roma Tor Vergata
University of Rome Tor Vergata
University of Valencia
Hassan II University of Casablanca
Lund University
SUNY
Waseda University
Rheinische Friedrich-Wilhelms-Universität Bonn
University of Würzburg
Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
University of Victoria
University of Bern
INFN, Laboratori Nazionali Di Frascati
University of Grenoble Alpes
University of Edinburgh
Oklahoma State University
Horia Hulubei National Institute of Physics and Nuclear Engineering
Max-Planck-Institut für Physik
National Technical University of Athens
University of Geneva
University of Warwick
Czech Technical University in Prague
Lancaster University
California State University
University of Liverpool
University of Johannesburg
INFN Sezione di Milano
University Paris-Sud
University of Sussex
University of Birmingham
INFN Sezione di Napoli
Università degli Studi di Napoli Federico II
National University of La Plata
University of Washington
Federal University of Rio de Janeiro
McGill University
Ludwig-Maximilians-Universität München
Centre de Recherche Institut du Cerveau et de la Moelle
University of Michigan, Ann Arbor
Albert-Ludwigs-Universität Freiburg
University of Toronto
Laboratório de Instrumentacão e Física Experimental de Partículas
Aristotle University of Thessaloniki
High Energy Accelerator Research Organization (KEK)
University of Sheffield
University of Texas at Austin
University of Glasgow
University of Milan
National and Kapodistrian University of Athens
Columbia University
SNS and INFN
University of Tokyo
Deutsches Elektronen-Synchrotron (DESY)
Ciudad Universitaria Pab. 1
Brandeis University
Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences
Duke University
Université de Montréal
Universita La Sapienza
Nagoya University
Ochanomizu University
A.I. Alikhanyan National Science Laboratory (YerPhi)
Comenius University
University of California, Irvine
University of Cape Town
Mohammed VI Polytechnic University
University of Pennsylvania
LAIC, Université d'Auvergne
Queen Mary University of London
Institute of Experimental Physics Slovak Academy of Sciences
Carleton University
Technische Universität Dresden
Humboldt-Universität zu Berlin
University of Oregon
Yale University
University of Belgrade
University of Texas at Arlington
DIBINEM, Alma Mater Studiorum, University of Bologna
University of Cambridge
United Arab Emirates University
University of Pittsburgh
School of Physics
University of California at Berkeley
University of Amsterdam
Charles University in Prague
University of Science and Technology of China
University of Oxford
University College London
Universidad Autónoma de Madrid
Institute of High Energy Physics Chinese Academy of Science
TRIUMF
University of British Columbia
University of Innsbruck
Tufts University
Istinye University
State University of Rio de Janeiro
Indiana University Bloomington
The Broad Institute of MIT and Harvard
Uppsala University
Lawrence Berkeley National Laboratory
Univ-Paris Diderot Sorbonne Paris-Cité
Bergische Universität Wuppertal
University of Gaziantep
Weizmann Institute of Science Israel
University of Siegen
University of Genova
Sezione INFN di Genova
Ohio State University
University of Massachusetts Amherst
INFN-TIFPA
University of Trento
Michigan State University
York University
Stockholm University
Oskar Klein Centre
Université de Toulouse
University of Illinois
Simon Fraser University
Boston University
University of Chinese Academy of Sciences
Nanjing University
Ankara University School of Medicine
Niels Bohr Institutet
Universite della Calabria
Radboud University Nijmegen
Universidad Técnica Federico Santa María
Istituto Nazionale di Fisica Nucleare, Sezione di Pavia
University of Pavia
PT Government Associated Laboratory, University of Minho
University of Oslo
Universidad Nacional de Colombia
Joint Laboratory of Optics
Universidade Federal de Juiz de Fora
Tbilisi State University
Argonne National Laboratory
Shanghai Jiao Tong University
Faculty of Science
Tsinghua University
University of Wisconsin
Chinese University of Hong Kong
University of Arizona
National Tsing Hua University
Istituto Nazionale di Fisica Nucleare, Sezione di Lecce
Institute of Physics of the Czech Academy of Sciences
Univ. of Ljubljana
Università degli Studi di Udine
Instituto Superior Técnico
Academia Sinica Taipei
University of Pisa
University of Salento
Bogazici University
University of Adelaide
Sez. di Roma Tre
Pontificia Universidad Católica de Chile
Millennium Institute for Subatomic physics at high energy frontier (SAPHIR)
Center for Autonomous Systems
Federal University of Bahia
University of Bucharest
Université Ibn-Tofail
Universidade de Lisboa
University of Hong Kong
Louisiana Tech University
Shandong University
Centro Nacional de Microelectrónica (IMB-CNM-CSIC)
Coimbra University Pó lo II
National Institute of Physics, College of Science, University of the Philippines, Diliman
University of Sharjah
University of New Mexico
NCSR Demokritos
Jagiellonian University
University of Alberta
University of Georgia
West University in Timisoara
Sun Yat-Sen University
Shinshu University
Osaka University
Tsukuba University
University Politehnica of Bucharest
Azerbaijan Academy of Sciences
Universidad de la Serena in la Serena
Tokyo Institute of Technology
Universidad de Tarapacá
Technion - Israel Institute of Technology
University of the Witwatersrand, Johannesburg
Iowa State University
University Andrés Bello
Kobe University
University of São Paulo
Hong Kong University of Science and Technology
Centro de Física Nuclear Universidade de Lisboa
Iowa University
Kyushu University
University Mohammed I
Universidad Antonio Nariño
iThemba Labs
University of Sydney
Transilvania University of Brasov
National Institute for R&D of Isotopic and Molecular Technologies
Technological Educational Institute of Athens
Petroleum Institute
Justus-Liebig-Universität Gießen
TOBB University of Economics and Technology
Universidad San Sebastian
Tokyo Metropolitan University

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

4 Scopus citations

Abstract

A search for Higgs boson pair production in the bb¯γγ final state is performed. The proton–proton collision dataset corresponds to an integrated luminosity of 308 fb⁻¹, consisting of two samples, 140 fb⁻¹ at a centre-of-mass energy of s=13TeV and 168 fb⁻¹ at s=13.6TeV, recorded between 2015 and 2024 by the ATLAS detector at the CERN Large Hadron Collider. In addition to a larger dataset, this analysis improves upon the previous search in the same final state through several methodological and technical developments. The Higgs boson pair production cross section divided by the Standard Model prediction is found to be μ_HH=0.9_−1.1^+1.4 (μ_HH=1_−1.0^+1.3 expected), which translates into a 95% confidence-level upper limit of μ_HH ' 3.7. At the same confidence level the Higgs self-coupling modifier is constrained to be in the range −1.6'κ_λ'6.6 (−1.8'κ_λ'6.9 expected).

Original language	English
Article number	140280
Journal	Physics Letters B
Volume	876
DOIs	https://doi.org/10.1016/j.physletb.2026.140280
State	Published - May 2026
Externally published	Yes

Keywords

ATLAS
B-jets
Di-Higgs
Photons
Run 3
Self-interaction

Access to Document

10.1016/j.physletb.2026.140280

Cite this

@article{340631b85e954d0f82d38bf8e92b91e5,

title = "Study of Higgs boson pair production in the HH→bb‾γγ final state with 308 fb−1 of data collected at s= 13 TeV and 13.6 TeV by the ATLAS experiment",

abstract = "A search for Higgs boson pair production in the bb¯γγ final state is performed. The proton{\textendash}proton collision dataset corresponds to an integrated luminosity of 308 fb−1, consisting of two samples, 140 fb−1 at a centre-of-mass energy of s=13TeV and 168 fb−1 at s=13.6TeV, recorded between 2015 and 2024 by the ATLAS detector at the CERN Large Hadron Collider. In addition to a larger dataset, this analysis improves upon the previous search in the same final state through several methodological and technical developments. The Higgs boson pair production cross section divided by the Standard Model prediction is found to be μHH=0.9−1.1+1.4 (μHH=1−1.0+1.3 expected), which translates into a 95\% confidence-level upper limit of μHH ' 3.7. At the same confidence level the Higgs self-coupling modifier is constrained to be in the range −1.6'κλ'6.6 (−1.8'κλ'6.9 expected).",

keywords = "ATLAS, B-jets, Di-Higgs, Photons, Run 3, Self-interaction",

author = "\{L.ZwalinskiThe 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 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 A. Aggarwal and C. Agheorghiesei and F. Ahmadov and S. Ahuja and X. Ai and G. Aielli and A. Aikot and \{Ait Tamlihat\}, M. and B. Aitbenchikh and M. Akbiyik and {\AA}kesson, \{T. P.A.\} and Akimov, \{A. V.\} and D. Akiyama and Akolkar, \{N. N.\} and S. Aktas and Alberghi, \{G. L.\} and J. Albert and U. Alberti and P. Albicocco and Albouy, \{G. L.\} and S. Alderweireldt and Alegria, \{Z. L.\} and M. Aleksa and Aleksandrov, \{I. N.\} and C. Alexa and L. Heinrich and E. Kourlitis",

note = "Publisher Copyright: {\textcopyright} 2026 The Authors.",

year = "2026",

month = may,

doi = "10.1016/j.physletb.2026.140280",

language = "English",

volume = "876",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Study of Higgs boson pair production in the HH→bb‾γγ final state with 308 fb−1 of data collected at s= 13 TeV and 13.6 TeV by the ATLAS experiment

AU - L.ZwalinskiThe 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 - 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 - Aggarwal, A.

AU - Agheorghiesei, C.

AU - Ahmadov, F.

AU - Ahuja, S.

AU - Ai, X.

AU - Aielli, G.

AU - Aikot, A.

AU - Ait Tamlihat, M.

AU - Aitbenchikh, B.

AU - Akbiyik, M.

AU - Åkesson, T. P.A.

AU - Akimov, A. V.

AU - Akiyama, D.

AU - Akolkar, N. N.

AU - Aktas, S.

AU - Alberghi, G. L.

AU - Albert, J.

AU - Alberti, U.

AU - Albicocco, P.

AU - Albouy, G. L.

AU - Alderweireldt, S.

AU - Alegria, Z. L.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alexa, C.

AU - Heinrich, L.

AU - Kourlitis, E.

PY - 2026/5

Y1 - 2026/5

N2 - A search for Higgs boson pair production in the bb¯γγ final state is performed. The proton–proton collision dataset corresponds to an integrated luminosity of 308 fb−1, consisting of two samples, 140 fb−1 at a centre-of-mass energy of s=13TeV and 168 fb−1 at s=13.6TeV, recorded between 2015 and 2024 by the ATLAS detector at the CERN Large Hadron Collider. In addition to a larger dataset, this analysis improves upon the previous search in the same final state through several methodological and technical developments. The Higgs boson pair production cross section divided by the Standard Model prediction is found to be μHH=0.9−1.1+1.4 (μHH=1−1.0+1.3 expected), which translates into a 95% confidence-level upper limit of μHH ' 3.7. At the same confidence level the Higgs self-coupling modifier is constrained to be in the range −1.6'κλ'6.6 (−1.8'κλ'6.9 expected).

AB - A search for Higgs boson pair production in the bb¯γγ final state is performed. The proton–proton collision dataset corresponds to an integrated luminosity of 308 fb−1, consisting of two samples, 140 fb−1 at a centre-of-mass energy of s=13TeV and 168 fb−1 at s=13.6TeV, recorded between 2015 and 2024 by the ATLAS detector at the CERN Large Hadron Collider. In addition to a larger dataset, this analysis improves upon the previous search in the same final state through several methodological and technical developments. The Higgs boson pair production cross section divided by the Standard Model prediction is found to be μHH=0.9−1.1+1.4 (μHH=1−1.0+1.3 expected), which translates into a 95% confidence-level upper limit of μHH ' 3.7. At the same confidence level the Higgs self-coupling modifier is constrained to be in the range −1.6'κλ'6.6 (−1.8'κλ'6.9 expected).

KW - ATLAS

KW - B-jets

KW - Di-Higgs

KW - Photons

KW - Run 3

KW - Self-interaction

UR - https://www.scopus.com/pages/publications/105036668807

U2 - 10.1016/j.physletb.2026.140280

DO - 10.1016/j.physletb.2026.140280

M3 - Article

AN - SCOPUS:105036668807

SN - 0370-2693

VL - 876

JO - Physics Letters B

JF - Physics Letters B

M1 - 140280

ER -

Study of Higgs boson pair production in the HH→bb‾γγ final state with 308 fb−1 of data collected at s= 13 TeV and 13.6 TeV by the ATLAS experiment

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this