Search for Higgs Boson Decays into a Z Boson and a Light Hadronically Decaying Resonance Using 13 TeV pp Collision Data from the ATLAS Detector

ATLAS Collaboration

doi:10.1103/PhysRevLett.125.221802

Search for Higgs Boson Decays into a Z Boson and a Light Hadronically Decaying Resonance Using 13 TeV pp Collision Data from the ATLAS Detector

ATLAS Collaboration

Aix-Marseille Université
University of Oklahoma
University of Massachusetts
CERN
University of Göttingen
Royal Holloway University of London
University of Toronto
University of Copenhagen
University of Sussex
Tel Aviv University
Technion-Israel Institute of Technology
Argonne National Laboratory
National Institute for Nuclear Physics
Abdus Salam International Centre for Theoretical Physics
NOVA University Lisbon
Johannes Gutenberg University Mainz
Universidad de Tarapacá
Université Grenoble Alpes
AGH University of Science and Technology
Northern Illinois University
Ludwig Maximilian University of Munich
Bogazici University
University of Geneva
Rutherford Appleton Laboratory
University of California at Santa Cruz
Université Paris-Saclay
Université Clermont Auvergne
Radboud University Nijmegen
Alexandru Ioan Cuza University of Iaşi
Laboratório de Instrumentação e Física Experimental de Partículas
University of Granada
Joint Institute for Nuclear Research
McGill University
Lawrence Berkeley National Laboratory
University of Rome Tor Vergata
Kyoto University
Lund University
RAS - P.N. Lebedev Physics Institute
University of Bologna
University of Victoria BC
Horia Hulubei National Institute of Physics and Nuclear Engineering
National Technical University of Athens
University of Amsterdam
Cadi Ayyad University
Czech Technical University in Prague
Academia Sinica - Institute of Physics
Tomsk State University
University of Oregon
University of Birmingham
University of Naples Federico II
Consejo Nacional de Investigaciones Científicas y Técnicas
University of Washington
Universidad Autónoma de Madrid
Universidade Federal do Rio de Janeiro
University of Oxford
Brandeis University
University of Michigan, Ann Arbor
German Electron Synchrotron
University of South Africa
Iowa State University
University of Sheffield
University of Texas at Austin
University of Bern
Stockholm University
Oskar Klein Centre
University of Milan
Heidelberg University
National and Kapodistrian University of Athens
Columbia University
RAS - Budker Institute of Nuclear Physics
Novosibirsk State University
Oklahoma State University
University of California at Irvine
High Energy Accelerator Research Organization, Tsukuba
University of Valencia
Universidade Federal de Juiz de Fora
Duke University
University of Montreal
University Politehnica of Bucharest
University of Freiburg
iThemba Labs
Ochanomizu University
The University of Tokyo
Tokyo Institute of Technology
Harvard University
Uppsala University
Mohamed I University
Brookhaven National Laboratory
Comenius University
University of Cape Town
University of Illinois
Humboldt University of Berlin
University of Wuppertal
CAS - Institute of High Energy Physics
Aristotle University of Thessaloniki
University of Rome La Sapienza
Cracow
Simon Fraser University
Yale University
University of Belgrade
University of Texas at Arlington
University of Sydney
Weizmann Institute of Science
University of Pittsburgh
University of Bonn
University of Wisconsin-Madison
Universidad Nacional de Colombia
University of Melbourne
University of Genoa
University College London
Max Planck Institute for Physics (Werner Heisenberg Institute)
SLAC National Accelerator Laboratory
University of Science and Technology of China
Russian Research Centre Kurchatov Institute
Lancaster University
University of Glasgow
Mohammed V University in Rabat
University of Cambridge
University of Siegen
California State University Fresno
Sorbonne Université
Tufts University
University of Warwick
Gaziantep University
Bahcesehir University
Stony Brook University
Carleton University
Moscow Engineering Physics Institute
University of Hassan II Casablanca
University of Arizona
Technische Universität Dresden
University of Manchester
Southern Methodist University
Queen Mary University of London
University of Würzburg
University of Pisa
University of Alberta
University of Oslo
Institute for High Energy Physics
University of Liverpool
Institute for High Energy Physics
Ohio State University
University of Johannesburg
Shanghai Jiao Tong University
Michigan State University
Universidad Técnica Federico Santa Maria
Slovak Academy of Sciences
University of Bergen
Boston University
Justus Liebig University Giessen
Ankara University
Indiana University Bloomington
Roma Tre University
University of Iowa
University of Calabria
Charles University
TRIUMF
University of Edinburgh
University of Minho
Istanbul Bilgi University
Palacký University Olomouc
Tbilisi State University
University of Pennsylvania School of Arts and Sciences
Nanjing University
Tsinghua University
Chinese University of Hong Kong
National Tsing Hua University
University of the Witwatersrand
University of Chinese Academy of Sciences
Czech Academy of Sciences
TU Dortmund University
University of Ljubljana
University of Udine
University of Lisbon
University of British Columbia
New York University
Shandong University
Universidad de Buenos Aires
York University Toronto
Pontificia Universidad Católica de Chile
Universidade Federal de São João del-Rei
Universidade de São Paulo
University of Adelaide
Demokritos National Centre for Scientific Research
University of Pavia
University of Texas at Dallas
University of Coimbra
INFN-TIFPA
University of Trento
Tokyo Metropolitan University
Nagasaki Institute of Applied Science
The University of Chicago
Alikhanov Institute for Theoretical and Experimental Physics
Jagiellonian University in Kraków
Lomonosov Moscow State University
University of Salento
Ibn Tofail University
West University of Timisoara
University of New Mexico
University of Tsukuba
Belarus Academy of Sciences
Shinshu University
Nagoya University
Kobe University
Osaka University
University of Innsbruck
Belarusian State University
SUNY Albany
Ivane Javakhishvili Tbilisi State University
Waseda University
Kyushu University
Azerbaijan National Academy of Sciences
Istanbul Aydin University
Universidad Andrés Bello
Hong Kong University of Science and Technology
The University of Hong Kong
KTH Royal Institute of Technology
Universidad Antonio Nariño
Hiroshima Institute of Technology
Transilvania University of Brasov
National Institute for Research and Development of Isotopic and Molecular Technologies
IN2P3 - Institut National de Physique Nucléaire et de Physique Des Particules
Louisiana Tech University
TOBB University of Economics and Technology
Kyoto University of Education

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

29 Citations (Scopus)

Abstract

A search for Higgs boson decays into a Z boson and a light resonance in two-lepton plus jet events is performed, using a pp collision dataset with an integrated luminosity of 139 fb-1 collected at s=13 TeV by the ATLAS experiment at the CERN LHC. The resonance considered is a light boson with a mass below 4 GeV from a possible extended scalar sector or a charmonium state. Multivariate discriminants are used for the event selection and for evaluating the mass of the light resonance. No excess of events above the expected background is found. Observed (expected) 95% confidence-level upper limits are set on the Higgs boson production cross section times branching fraction to a Z boson and the signal resonance, with values in the range 17-340 pb (16-5+6-320-90+130 pb) for the different light spin-0 boson mass and branching fraction hypotheses, and with values of 110 and 100 pb (100-30+40 and 100-30+40 pb) for the ηc and J/ψ hypotheses, respectively.

Original language	English
Article number	221802
Journal	Physical Review Letters
Volume	125
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevLett.125.221802
Publication status	Published - 25 Nov 2020

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.125.221802

Cite this

@article{1ac272a5b7d04122bf093f04f399b4af,

title = "Search for Higgs Boson Decays into a Z Boson and a Light Hadronically Decaying Resonance Using 13 TeV pp Collision Data from the ATLAS Detector",

abstract = "A search for Higgs boson decays into a Z boson and a light resonance in two-lepton plus jet events is performed, using a pp collision dataset with an integrated luminosity of 139 fb-1 collected at s=13 TeV by the ATLAS experiment at the CERN LHC. The resonance considered is a light boson with a mass below 4 GeV from a possible extended scalar sector or a charmonium state. Multivariate discriminants are used for the event selection and for evaluating the mass of the light resonance. No excess of events above the expected background is found. Observed (expected) 95\% confidence-level upper limits are set on the Higgs boson production cross section times branching fraction to a Z boson and the signal resonance, with values in the range 17-340 pb (16-5+6-320-90+130 pb) for the different light spin-0 boson mass and branching fraction hypotheses, and with values of 110 and 100 pb (100-30+40 and 100-30+40 pb) for the ηc and J/ψ hypotheses, respectively.",

author = "\{ATLAS Collaboration\} and G. Aad and B. Abbott and Abbott, \{D. C.\} and \{Abed Abud\}, A. and K. Abeling and Abhayasinghe, \{D. K.\} and Abidi, \{S. H.\} and Abouzeid, \{O. S.\} and Abraham, \{N. L.\} and H. Abramowicz and H. Abreu and Y. Abulaiti and Acharya, \{B. S.\} and B. Achkar and L. Adam and \{Adam Bourdarios\}, C. and L. Adamczyk and L. Adamek and J. Adelman and M. Adersberger and A. Adiguzel and S. Adorni and T. Adye and Affolder, \{A. A.\} and Y. Afik and C. Agapopoulou and Agaras, \{M. N.\} and A. Aggarwal and C. Agheorghiesei and Aguilar-Saavedra, \{J. A.\} and A. Ahmad and F. Ahmadov and Ahmed, \{W. S.\} and X. Ai and G. Aielli and S. Akatsuka and {\AA}kesson, \{T. P.A.\} and E. Akilli and Akimov, \{A. V.\} and \{Al Khoury\}, K. and Alberghi, \{G. L.\} and J. Albert and \{Alconada Verzini\}, \{M. J.\} and S. Alderweireldt and M. Aleksa and Aleksandrov, \{I. N.\} and C. Alexa and Connell, \{S. H.\} and N. Govender and L. Truong",

note = "Publisher Copyright: {\textcopyright} 2020 CERN. {\textcopyright} 2020 CERN, for the ATLAS Collaboration. Published by the American Physical Society under the terms of the {"}https://creativecommons.org/licenses/by/4.0/{"} Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP.",

year = "2020",

month = nov,

day = "25",

doi = "10.1103/PhysRevLett.125.221802",

language = "English",

volume = "125",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "22",

}

TY - JOUR

T1 - Search for Higgs Boson Decays into a Z Boson and a Light Hadronically Decaying Resonance Using 13 TeV pp Collision Data from the ATLAS Detector

AU - ATLAS Collaboration

AU - Aad, G.

AU - Abbott, B.

AU - Abbott, D. C.

AU - Abed Abud, A.

AU - Abeling, K.

AU - Abhayasinghe, D. K.

AU - Abidi, S. H.

AU - Abouzeid, O. S.

AU - Abraham, N. L.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abulaiti, Y.

AU - Acharya, B. S.

AU - Achkar, B.

AU - Adam, L.

AU - Adam Bourdarios, C.

AU - Adamczyk, L.

AU - Adamek, L.

AU - Adelman, J.

AU - Adersberger, M.

AU - Adiguzel, A.

AU - Adorni, S.

AU - Adye, T.

AU - Affolder, A. A.

AU - Afik, Y.

AU - Agapopoulou, C.

AU - Agaras, M. N.

AU - Aggarwal, A.

AU - Agheorghiesei, C.

AU - Aguilar-Saavedra, J. A.

AU - Ahmad, A.

AU - Ahmadov, F.

AU - Ahmed, W. S.

AU - Ai, X.

AU - Aielli, G.

AU - Akatsuka, S.

AU - Åkesson, T. P.A.

AU - Akilli, E.

AU - Akimov, A. V.

AU - Al Khoury, K.

AU - Alberghi, G. L.

AU - Albert, J.

AU - Alconada Verzini, M. J.

AU - Alderweireldt, S.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alexa, C.

AU - Connell, S. H.

AU - Govender, N.

AU - Truong, L.

N1 - Publisher Copyright: © 2020 CERN. © 2020 CERN, for the ATLAS Collaboration. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/" Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP.

PY - 2020/11/25

Y1 - 2020/11/25

N2 - A search for Higgs boson decays into a Z boson and a light resonance in two-lepton plus jet events is performed, using a pp collision dataset with an integrated luminosity of 139 fb-1 collected at s=13 TeV by the ATLAS experiment at the CERN LHC. The resonance considered is a light boson with a mass below 4 GeV from a possible extended scalar sector or a charmonium state. Multivariate discriminants are used for the event selection and for evaluating the mass of the light resonance. No excess of events above the expected background is found. Observed (expected) 95% confidence-level upper limits are set on the Higgs boson production cross section times branching fraction to a Z boson and the signal resonance, with values in the range 17-340 pb (16-5+6-320-90+130 pb) for the different light spin-0 boson mass and branching fraction hypotheses, and with values of 110 and 100 pb (100-30+40 and 100-30+40 pb) for the ηc and J/ψ hypotheses, respectively.

AB - A search for Higgs boson decays into a Z boson and a light resonance in two-lepton plus jet events is performed, using a pp collision dataset with an integrated luminosity of 139 fb-1 collected at s=13 TeV by the ATLAS experiment at the CERN LHC. The resonance considered is a light boson with a mass below 4 GeV from a possible extended scalar sector or a charmonium state. Multivariate discriminants are used for the event selection and for evaluating the mass of the light resonance. No excess of events above the expected background is found. Observed (expected) 95% confidence-level upper limits are set on the Higgs boson production cross section times branching fraction to a Z boson and the signal resonance, with values in the range 17-340 pb (16-5+6-320-90+130 pb) for the different light spin-0 boson mass and branching fraction hypotheses, and with values of 110 and 100 pb (100-30+40 and 100-30+40 pb) for the ηc and J/ψ hypotheses, respectively.

UR - https://www.scopus.com/pages/publications/85098476447

U2 - 10.1103/PhysRevLett.125.221802

DO - 10.1103/PhysRevLett.125.221802

M3 - Article

C2 - 33315463

AN - SCOPUS:85098476447

SN - 0031-9007

VL - 125

JO - Physical Review Letters

JF - Physical Review Letters

IS - 22

M1 - 221802

ER -

Search for Higgs Boson Decays into a Z Boson and a Light Hadronically Decaying Resonance Using 13 TeV pp Collision Data from the ATLAS Detector

Abstract

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