Search for displaced photons produced in exotic decays of the Higgs boson using 13 TeV pp collisions with the ATLAS detector

ATLAS Collaboration

doi:10.1103/PhysRevD.108.032016

Search for displaced photons produced in exotic decays of the Higgs boson using 13 TeV pp collisions with the ATLAS detector

ATLAS Collaboration

School of Physics and Astronomy

Adelaide University
University of Alberta
TRIUMF
Ankara University
TOBB University of Economics and Technology
University of Grenoble Alpes
Institute for High Energy Physics
Humboldt University of Berlin
University of Freiburg
Universidad Nacional de La Plata
University of Victoria BC
National Institute for Nuclear Physics
University of Naples Federico II
CNRS
Argonne National Laboratory
Harvard University
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National and Kapodistrian University of Athens
University of the Aegean
National Technical University of Athens
University of Texas at Austin
Azerbaijan National Academy of Sciences
CERN
Autonomous University of Barcelona
ICREA
CAS - Institute of High Energy Physics
University of Chinese Academy of Sciences
University of Science and Technology of China
Stockholm University
Oskar Klein Centre
Tsinghua University
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The Collaborative Innovation Center of Quantum Matter (CICQM)
Shandong University
Nanjing University
United States Department of Energy
German Electron Synchrotron
University of Illinois at Urbana-Champaign
University of Belgrade
University of Bergen
Lawrence Berkeley National Laboratory
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Rutherford Appleton Laboratory
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Horia Hulubei National Institute of Physics and Nuclear Engineering
Alexandru Ioan Cuza University of Iaşi
National Institute for Research and Development of Isotopic and Molecular Technologies
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West University of Timisoara
Comenius University
Slovak Academy of Sciences
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Instituto de Física de Buenos Aires (IFIBA)
California State University Fresno
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University of Cambridge
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University of Johannesburg
University of the Philippines
University of the Witwatersrand
Carleton University
University of Hassan II Casablanca
Ibn Tofail University
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Mohammed V University in Rabat
Academia Sinica - Institute of Physics
University of Göttingen
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The University of Chicago
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Lawrence Livermore National Laboratory
University of Pennsylvania School of Arts and Sciences
University of Copenhagen
University of Calabria
Centro Studi e Ricerche Enrico Fermi
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Demokritos National Centre for Scientific Research
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SLAC National Accelerator Laboratory
Michigan State University
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National Tsing Hua University
An-Najah National University
Indiana University Bloomington
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King's College London
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High Energy Accelerator Research Organization, Tsukuba
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AGH University of Krakow
Jagiellonian University in Kraków
Institute of Nuclear Physics Polish Academy of Sciences
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Institute of Particle Physics
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Max Planck Institute for Physics (Werner Heisenberg Institute)
University of New Mexico
Radboud University Nijmegen
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The University of Osaka
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Westmont College
Laboratório de Instrumentação e Física Experimental de Partículas
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Czech Technical University in Prague
Charles University
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Pontificia Universidad Católica de Chile
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KTH Royal Institute of Technology
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Tbilisi State University
Ilia State University
Ivane Javakhishvili Tbilisi State University
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Hellenic Open University
The University of Tokyo
York University Toronto
University of Tsukuba
Tufts University
University of Valencia
University of British Columbia
University of Würzburg
Waseda University
Weizmann Institute of Science
Ben-Gurion University of the Negev
University of Louisville
University of Wuppertal
Yale University

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

15 Scopus citations

Abstract

A search is performed for delayed and nonpointing photons originating from the displaced decay of a neutral long-lived particle (LLP). The analysis uses the full run 2 dataset of proton-proton collisions delivered by the LHC at a center-of-mass energy of Formula Presented between 2015 and 2018 and recorded by the ATLAS detector, corresponding to an integrated luminosity of Formula Presented. The capabilities of the ATLAS electromagnetic calorimeter are exploited to precisely measure the arrival times and trajectories of photons. The results are interpreted in a scenario where the LLPs are pair produced in exotic decays of the 125 GeV Higgs boson, and each LLP subsequently decays into a photon and a particle that escapes direct detection, giving rise to missing transverse momentum. No significant excess is observed above the expectation due to Standard Model background processes. The results are used to set upper limits on the branching ratio of the exotic decay of the Higgs boson. A model-independent limit is also set on the production of photons with large values of displacement and time delay.

Original language	English
Article number	032016
Journal	Physical Review D
Volume	108
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevD.108.032016
State	Published - 1 Aug 2023

Funding

Funders	Funder number
BSF-NSF
Agence Nationale de la Recherche
Australian Research Council
La Caixa Banking Foundation
Centre National pour la Recherche Scientifique et Technique
Fundação para a Ciência e a Tecnologia
National Stroke Foundation
Narodowe Centrum Nauki
CEA-DRF
H2020 Marie Skłodowska-Curie Actions
Japan Society for the Promotion of Science
INFN-CNAF
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Ministerio de Ciencia e Innovación
Israel Science Foundation
Wallenberg Foundation
Leverhulme Trust
PROMETEO
Staatssekretariat für Bildung, Forschung und Innovation
Javna Agencija za Raziskovalno Dejavnost RS
Generalitat de Catalunya
Instituto Nazionale di Fisica Nucleare
Bundesministerium für Wissenschaft, Forschung und Wirtschaft
Austrian Science Fund
Narodowa Agencja Wymiany Akademickiej
Alabama Space Grant Consortium
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
Göran Gustafssons Stiftelser
MIZŠ
Deutsche Forschungsgemeinschaft
Neurosurgical Research Foundation
Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja
U.S. Department of Energy
European Cooperation in Science and Technology
EU-ESF
RGC
Fundação de Amparo à Pesquisa do Estado de São Paulo
Institutul de Fizică Atomică
Ministry of Science and Technology of the People's Republic of China
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
Irish Rugby Football Union
Cantons of Bern and Geneva
Chinese Academy of Sciences
Defence Science Institute
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
Compute Canada
MNE
Agencia Nacional de Promoción Científica y Tecnológica
Minerva Foundation
European Research Council
Royal Society of South Australia
European Regional Development Fund
CERN
Ministerstvo Školství, Mládeže a Tělovýchovy
National Research Council Canada
Brookhaven National Laboratory
Alexander von Humboldt-Stiftung
Multiple Sclerosis Scientific Research Foundation
Horizon 2020
British Columbia Knowledge Development Fund
Ministry of Education, Culture, Sports, Science and Technology
National Natural Science Foundation of China
CRC Health Group	21/SCI/017
NDGF	CC-IN2P3
Science and Technology Facilities Council	ST/W000547/1
DNSRC	IN2P3-CNRS
Norwegian Financial Mechanism	2014-2021
UNCE	SCI/013
Horizon 2020 Framework Programme	754510

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10.1103/PhysRevD.108.032016

Cite this

@article{1c24c914d4c7421ba554485846763887,

title = "Search for displaced photons produced in exotic decays of the Higgs boson using 13 TeV pp collisions with the ATLAS detector",

abstract = "A search is performed for delayed and nonpointing photons originating from the displaced decay of a neutral long-lived particle (LLP). The analysis uses the full run 2 dataset of proton-proton collisions delivered by the LHC at a center-of-mass energy of Formula Presented between 2015 and 2018 and recorded by the ATLAS detector, corresponding to an integrated luminosity of Formula Presented. The capabilities of the ATLAS electromagnetic calorimeter are exploited to precisely measure the arrival times and trajectories of photons. The results are interpreted in a scenario where the LLPs are pair produced in exotic decays of the 125 GeV Higgs boson, and each LLP subsequently decays into a photon and a particle that escapes direct detection, giving rise to missing transverse momentum. No significant excess is observed above the expectation due to Standard Model background processes. The results are used to set upper limits on the branching ratio of the exotic decay of the Higgs boson. A model-independent limit is also set on the production of photons with large values of displacement and time delay.",

author = "\{ATLAS Collaboration\} and Filmer, \{E. K.\} and P. Jackson and Kong, \{A. X.Y.\} and H. Potti and Ruggeri, \{T. A.\} and Ting, \{E. X.L.\} and White, \{M. J.\} and Gingrich, \{D. M.\} and Lindon, \{J. H.\} and N. Nishu and Pinfold, \{J. L.\} and O. Cakir and \{Duran Yildiz\}, H. and S. Kuday and \{Turk Cakir\}, I. and S. Sultansoy and \{Adam Bourdarios\}, C. and N. Berger and F. Costanza and M. Delmastro and \{Di Ciaccio\}, L. and C. Goy and T. Guillemin and T. Hryn{\textquoteright}ova and S. J{\'e}z{\'e}quel and I. Koletsou and J. Lev{\^e}que and Little, \{J. D.\} and \{Lorenzo Martinez\}, N. and G. Poddar and \{Salvador Salas\}, A. and C. Appelt and O. Kuprash and \{Alconada Verzini\}, \{M. J.\} and H. Abramowicz and L. Barak and U. Barron and G. Bella and Y. Benhammou and B. Chen and H. Cohen and E. Etzion and G. Koren and Lutz, \{M. S.\} and R. Nayak and \{Pascual Dominguez\}, L. and D. Reikher and A. Soffer and Tamir, \{N. M.\} and D. Vannicola",

note = "Publisher Copyright: {\textcopyright} 2023 CERN, for the ATLAS Collaboration.",

year = "2023",

month = aug,

day = "1",

doi = "10.1103/PhysRevD.108.032016",

language = "אנגלית",

volume = "108",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "3",

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TY - JOUR

T1 - Search for displaced photons produced in exotic decays of the Higgs boson using 13 TeV pp collisions with the ATLAS detector

AU - ATLAS Collaboration

AU - Filmer, E. K.

AU - Jackson, P.

AU - Kong, A. X.Y.

AU - Potti, H.

AU - Ruggeri, T. A.

AU - Ting, E. X.L.

AU - White, M. J.

AU - Gingrich, D. M.

AU - Lindon, J. H.

AU - Nishu, N.

AU - Pinfold, J. L.

AU - Cakir, O.

AU - Duran Yildiz, H.

AU - Kuday, S.

AU - Turk Cakir, I.

AU - Sultansoy, S.

AU - Adam Bourdarios, C.

AU - Berger, N.

AU - Costanza, F.

AU - Delmastro, M.

AU - Di Ciaccio, L.

AU - Goy, C.

AU - Guillemin, T.

AU - Hryn’ova, T.

AU - Jézéquel, S.

AU - Koletsou, I.

AU - Levêque, J.

AU - Little, J. D.

AU - Lorenzo Martinez, N.

AU - Poddar, G.

AU - Salvador Salas, A.

AU - Appelt, C.

AU - Kuprash, O.

AU - Alconada Verzini, M. J.

AU - Abramowicz, H.

AU - Barak, L.

AU - Barron, U.

AU - Bella, G.

AU - Benhammou, Y.

AU - Chen, B.

AU - Cohen, H.

AU - Etzion, E.

AU - Koren, G.

AU - Lutz, M. S.

AU - Nayak, R.

AU - Pascual Dominguez, L.

AU - Reikher, D.

AU - Soffer, A.

AU - Tamir, N. M.

AU - Vannicola, D.

PY - 2023/8/1

Y1 - 2023/8/1

N2 - A search is performed for delayed and nonpointing photons originating from the displaced decay of a neutral long-lived particle (LLP). The analysis uses the full run 2 dataset of proton-proton collisions delivered by the LHC at a center-of-mass energy of Formula Presented between 2015 and 2018 and recorded by the ATLAS detector, corresponding to an integrated luminosity of Formula Presented. The capabilities of the ATLAS electromagnetic calorimeter are exploited to precisely measure the arrival times and trajectories of photons. The results are interpreted in a scenario where the LLPs are pair produced in exotic decays of the 125 GeV Higgs boson, and each LLP subsequently decays into a photon and a particle that escapes direct detection, giving rise to missing transverse momentum. No significant excess is observed above the expectation due to Standard Model background processes. The results are used to set upper limits on the branching ratio of the exotic decay of the Higgs boson. A model-independent limit is also set on the production of photons with large values of displacement and time delay.

AB - A search is performed for delayed and nonpointing photons originating from the displaced decay of a neutral long-lived particle (LLP). The analysis uses the full run 2 dataset of proton-proton collisions delivered by the LHC at a center-of-mass energy of Formula Presented between 2015 and 2018 and recorded by the ATLAS detector, corresponding to an integrated luminosity of Formula Presented. The capabilities of the ATLAS electromagnetic calorimeter are exploited to precisely measure the arrival times and trajectories of photons. The results are interpreted in a scenario where the LLPs are pair produced in exotic decays of the 125 GeV Higgs boson, and each LLP subsequently decays into a photon and a particle that escapes direct detection, giving rise to missing transverse momentum. No significant excess is observed above the expectation due to Standard Model background processes. The results are used to set upper limits on the branching ratio of the exotic decay of the Higgs boson. A model-independent limit is also set on the production of photons with large values of displacement and time delay.

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DO - 10.1103/PhysRevD.108.032016

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AN - SCOPUS:85174173201

SN - 2470-0010

VL - 108

JO - Physical Review D

JF - Physical Review D

IS - 3

M1 - 032016

ER -

Search for displaced photons produced in exotic decays of the Higgs boson using 13 TeV pp collisions with the ATLAS detector

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