Search for the decay of the Higgs boson to a Z boson and a light pseudoscalar particle decaying to two photons
Abstract: A search for the decay of the Higgs boson to a boson and a light, pseudoscalar particle, , decaying respectively to two leptons and to two photons is reported. The search uses the full LHC Run 2 proton–proton collision data at √ = 13 TeV, corresponding to 139 fb−1 collected by the ATLAS detector. This is one of the first searches for this specific decay mode of the Higgs boson, and it probes unexplored parameter space in models with axion-like particles (ALPs) and extended scalar sectors. The mass of the particle is assumed to be in the range 0.1–33 GeV. The data are analysed in two categories: a merged category where the photons from the decay are reconstructed in the ATLAS calorimeter as a single cluster, and a resolved category in which two separate photons are detected. The main background processes are from Standard Model boson production in association with photons or jets. The data are in agreement with the background predictions, and upper limits on the branching ratio of the Higgs boson decay to times the branching ratio → are derived at the 95% confidence level and they range from 0.08% to 2% depending on the mass of the particle. The results are also interpreted in the context of ALP models
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Anmerkungen
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Physics letters. - 850 (2024) , 138536, ISSN: 1873-2445
- Ereignis
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Veröffentlichung
- (wo)
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Freiburg
- (wer)
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Universität
- (wann)
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2024
- Urheber
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ATLAS Collaboration CERN, [Study Group]
Argyropoulos, Spyridon
Becherer, Fabian
Bhalla, Naman Kumar
Böhler, Michael
Burlayenko, Oleksandr
Diehl, Leena
Froch, Alexander
Gurdasani, Simran Sunil
Heidegger, Constantin
Heidegger, Kim K.
Herten, Gregor
Jain, Prasham
Jakobs, Karl
Jenni, Peter
Kalaitzidou, Ilia
Karentzos, Efstathios
Köneke, Karsten
Küsters, Roman
Kuprash, Oleg
Landgraf, Ulrich
Lang, Valerie
Moskalets, Tetiana
Öncel, Ömer Ogul
Parzefall, Ulrich
Plesanovs, Vladislavs
Pretel, Jose
Rafanoharana, Dimbiniaina
Rodríguez Rodríguez, Arturo
Rossini, Lorenzo
Rottler, Benjamin
Rúriková, Zuzana
Sammel, Dirk
Sauerburger, Frank
Schleicher, Katharina E.
Scholer, Patrick
Schumacher, Markus
Solovieva, Ksenia
Sperlich, Dennis
Weiser, Christian
Winter, Benedict T.
Zanzi, Daniele
et al
- Beteiligte Personen und Organisationen
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Experimentelle Teilchenphysik
- DOI
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10.1016/j.physletb.2024.138536
- URN
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urn:nbn:de:bsz:25-freidok-2533795
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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25.03.2025, 13:49 MEZ
Datenpartner
Deutsche Nationalbibliothek. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.
Beteiligte
- ATLAS Collaboration CERN, [Study Group]
- Argyropoulos, Spyridon
- Becherer, Fabian
- Bhalla, Naman Kumar
- Böhler, Michael
- Burlayenko, Oleksandr
- Diehl, Leena
- Froch, Alexander
- Gurdasani, Simran Sunil
- Heidegger, Constantin
- Heidegger, Kim K.
- Herten, Gregor
- Jain, Prasham
- Jakobs, Karl
- Jenni, Peter
- Kalaitzidou, Ilia
- Karentzos, Efstathios
- Köneke, Karsten
- Küsters, Roman
- Kuprash, Oleg
- Landgraf, Ulrich
- Lang, Valerie
- Moskalets, Tetiana
- Öncel, Ömer Ogul
- Parzefall, Ulrich
- Plesanovs, Vladislavs
- Pretel, Jose
- Rafanoharana, Dimbiniaina
- Rodríguez Rodríguez, Arturo
- Rossini, Lorenzo
- Rottler, Benjamin
- Rúriková, Zuzana
- Sammel, Dirk
- Sauerburger, Frank
- Schleicher, Katharina E.
- Scholer, Patrick
- Schumacher, Markus
- Solovieva, Ksenia
- Sperlich, Dennis
- Weiser, Christian
- Winter, Benedict T.
- Zanzi, Daniele
- et al
- Experimentelle Teilchenphysik
- Universität
Entstanden
- 2024
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