Search for pair-produced higgsinos decaying via Higgs or Z bosons to final states containing a pair of photons and a pair of b-jets with the ATLAS detector

The ATLAS collaboration

Research output: Contribution to journalArticlepeer-review

Abstract

A search is presented for the pair production of higgsinos χ˜ in gauge-mediated supersymmetry models, where the lightest neutralinos χ˜1 0 decay into a light gravitino G˜ in association with either a Higgs h or a Z boson. The search is performed with the ATLAS detector at the Large Hadron Collider using 139 fb−1 of proton–proton collisions at a centre-of-mass energy of s=13TeV. It targets final states in which a Higgs boson decays into a photon pair, while the other Higgs or Z boson decays into a bb¯ pair, with missing transverse momentum associated with the two gravitinos. Search regions dependent on the amount of missing transverse momentum are defined by the requirements that the diphoton mass should be consistent with the mass of the Higgs boson, and the bb¯ mass with the mass of the Higgs or Z boson. The main backgrounds are estimated with data-driven methods using the sidebands of the diphoton mass distribution. No excesses beyond Standard Model expectations are observed and higgsinos with masses up to 320GeV are excluded, assuming a branching fraction of 100% for χ˜1 0→hG˜. This analysis excludes higgsinos with masses of 130GeV for branching fractions to hG˜ as low as 36%, thus providing complementarity to previous ATLAS searches in final states with multiple leptons or multiple b-jets, targeting different decays of the electroweak bosons.

Original languageEnglish
Article number138938
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume856
DOIs
StatePublished - 1 Sep 2024

Funding

FundersFunder number
BSF-NSF
Australian Research Council
DRAC
Centre National pour la Recherche Scientifique et Technique
Semiconductor Research Corporation
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
Science and Technology Facilities Council
Horizon 2020, ICSC-NextGenerationEU
H2020 Marie Skłodowska-Curie Actions
HORIZON EUROPE Marie Sklodowska-Curie Actions
INFN-CNAF
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
Javna Agencija za Raziskovalno Dejavnost RS
Generalitat de Catalunya
Bundesministerium für Wissenschaft, Forschung und Wirtschaft
Austrian Science Fund
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
Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja
European Cooperation in Science and Technology
EU-ESF
Investissements d'Avenir Labex
International Council of Shopping Centers
RGC
Fundação de Amparo à Pesquisa do Estado de São Paulo
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
MNE
Agencia Nacional de Promoción Científica y Tecnológica
Royal Society
Minerva Foundation
National Research Foundation
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
Norges ForskningsrådRCN-314472
GenT Programmes Generalitat ValencianaCIDEGENT/2019/023, CIDEGENT/2019/027
National Natural Science Foundation of China12275265, PRIMUS/21/SCI/017, 12175119, NSFC-12075060
Fundación BBVALEO22-1-603
European Regional Development FundIDIFEDER/2018/048, LCF/BQ/PI20/11760025
U.S. Department of EnergyECA DE-AC02-76SF00515
Center for Advancing Research Impact in SocietyJ1-3010
NDGFCC-IN2P3
Narodowa Agencja Wymiany AkademickiejPPN/PPO/2020/1/00002/U/00001
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen ForschungRPG-2020-004, PCEFP2_194658
Deutsche ForschungsgemeinschaftDFG - CR 312/5-1
Norwegian Financial Mechanism2014-2021
H2020 MSC IF101033496
MUCCACHIST-ERA-19-XAI-00
Instituto Nazionale di Fisica Nucleare754496
European Research Council948254
H2020 European Research CouncilHPOFHIC - 10103, 101002463
Fondo Nacional de Desarrollo Científico y Tecnológico1190886, 1210400
FAIR-NextGenerationEUPE00000013
Narodowe Centrum NaukiUMO-2020/37/B/ST2/01043, UMO-2019/34/E/ST2/00393, 2021/42/E/ST2/00350, UMO-2021/40/C/ST2/00187
Knut och Alice Wallenbergs StiftelseKAW 2018.0157, KAW 2017.0100, KAW 2018.0458, KAW 2019.0447
CERN-CZ21/SCI/017
VetenskapsrådetVR 2018-00482, 2021-03651, VR 2022-04683, VR 2022-03845
La Caixa Banking FoundationLCF/BQ/PI20/11760025
Agence Nationale de la RechercheANR-20-CE31-0013, ANR-21-CE31-0013, ANR-11-LABX-0012, ANR-21-CE31-0022
UNCESCI/013
Ministerio de Ciencia e InnovaciónPID2021-125273NB, RYC2021-031273-I, RYC2022-038164-I, RYC2020-030254-I, PCI2022-135018-2, RYC2019-028510-I
DNSRCIN2P3-CNRS
Japan Society for the Promotion of ScienceJP21H05085, JP22H04944, JP22H01227

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