Search for short- and long-lived axion-like particles in H→aa→4γ decays with the ATLAS experiment at the LHC

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dc.authorscopusidAndrew John Beddall / 57215802986
dc.authorscopusidSerkant Ali Çetin / 34567544400
dc.authorscopusidSertaç Öztürk / 56421488400
dc.authorscopusidSinem Şimşek / 57210344387
dc.authorwosidAndrew John Beddall / AAE-5820-2022
dc.authorwosidSertaç Öztürk / AGO-2476-2022
dc.authorwosidSerkant Ali Çetin / AGF-0147-2022
dc.authorwosidSinem Şimşek / AGG-2640-2022
dc.contributor.authorAad, G.
dc.contributor.authorAbbott, B.
dc.contributor.authorAbeling, K.
dc.contributor.authorBeddall, Andrew John
dc.contributor.authorÇetin, Serkant Ali
dc.contributor.authorÖztürk, Sertaç
dc.contributor.authorŞimşek, Sinem
dc.date.accessioned2025-04-18T10:50:55Z
dc.date.available2025-04-18T10:50:55Z
dc.date.issued2024
dc.departmentİstinye Üniversitesi, Rektörlük, Temel Bilimler Bölümü
dc.description.abstractPresented is the search for anomalous Higgs boson decays into two axion-like particles (ALPs) using the full Run 2 data set of 140fb-1 of proton-proton collisions at a centre-of-mass energy of 13TeV recorded by the ATLAS experiment. The ALPs are assumed to decay into two photons, providing sensitivity to recently proposed models that could explain the (g-2)μ discrepancy. This analysis covers an ALP mass range from 100 to 62GeV and ALP-photon couplings in the range 10-7TeV-1<Caγγ/Λ<1TeV-1, and therefore includes signatures with significantly displaced vertices and highly collinear photons. No significant excess of events above the Standard Model background is observed. Upper limits at 95% confidence level are placed on the branching ratio of the Higgs boson to two ALPs in the four-photon final state, and are in the range of 10-5 to 3×10-2, depending on the hypothesized ALP mass and ALP-photon coupling strength.
dc.identifier.citationNull, N., Aad, G., Abbott, B., Abeling, K., Abicht, N., Abidi, S., ... & Balek, P. (2024). Search for short-and long-lived axion-like particles in $$ H\rightarrow aa\rightarrow 4\gamma $$ decays with the ATLAS experiment at the LHC. EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 84(7).
dc.identifier.doi10.1140/epjc/s10052-024-12979-0
dc.identifier.endpage31
dc.identifier.issn14346044
dc.identifier.issue7
dc.identifier.scopus2-s2.0-85200026299
dc.identifier.scopusqualityQ1
dc.identifier.startpage1
dc.identifier.urihttp://dx.doi.org/10.1140/epjc/s10052-024-12979-0
dc.identifier.urihttps://hdl.handle.net/20.500.12713/7214
dc.identifier.volume84
dc.indekslendigikaynakScopus
dc.institutionauthorBeddall, Andrew John
dc.institutionauthorÇetin, Serkant Ali
dc.institutionauthorÖztürk, Sertaç
dc.institutionauthorŞimşek, Sinem
dc.institutionauthoridAndrew John Beddall / 0000-0002-8451-9672
dc.institutionauthoridSerkant Ali Çetin / 0000-0001-5050-8441
dc.institutionauthoridSertaç Öztürk / 0000-0001-6533-6144
dc.institutionauthoridSinem Şimşek / 0000-0002-9650-3846
dc.language.isoen
dc.publisherSpringer nature
dc.relation.ispartofEuropean physical journal c
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.titleSearch for short- and long-lived axion-like particles in H→aa→4γ decays with the ATLAS experiment at the LHC
dc.typeArticle

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