Improved measurement of the branching fraction of hc → γη′/η and search for hc→ γπ0

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dc.authorscopusidSerkant Ali Çetin / 34567544400
dc.authorwosidSerkant Ali Çetin / AGF-0147-2022
dc.contributor.authorAblikim, M.
dc.contributor.authorAchasov, M.N.
dc.contributor.authorAdlarson, P.
dc.contributor.authorAfedulidis, O.
dc.contributor.authorÇetin, Serkant Ali
dc.date.accessioned2025-04-17T13:53:25Z
dc.date.available2025-04-17T13:53:25Z
dc.date.issued2024
dc.departmentİstinye Üniversitesi, Rektörlük, Temel Bilimler Bölümü
dc.description.abstractThe processes hc→ γP (P = η′, η, π0) are studied with a sample of (27.12 ± 0.14) × 108ψ(3686) events collected by the BESIII detector at the BEPCII collider. The decay hc→ γη is observed for the first time with the significance of 9.0 σ, and the branching fraction is determined to be (3.77 ± 0.55 ± 0.13 ± 0.26) × 10−4, while B (hc→ γη′) is measured to be (1.40 ± 0.11 ± 0.04 ± 0.10) × 10−3, where the first uncertainties are statistical, the second systematic, and the third from the branching fraction of ψ(3686) → π0hc. The combination of these results allows for a precise determination of Rhc=Bhc→γηBhc→γη′, which is calculated to be (27.0 ± 4.4 ± 1.0)%. The results are valuable for gaining a deeper understanding of η − η′ mixing, and its manifestation within quantum chromodynamics. No significant signal is found for the decay hc → γπ0, and an upper limit is placed on its branching fraction of B(hc → γπ0) < 5.0 × 10−5, at the 90% confidence level. © The Author(s) 2024.
dc.description.sponsorshipNational Science and Technology fund of Mongolia, BEPCII, Shanghai Key Laboratory for Particle Physics and Cosmology, Instituto Nazionale di Fisica Nucleare, Institute of Nuclear and Particle Physics, Shanghai Jiao Tong University, Chinese Academy of Sciences,
dc.identifier.citationAblikim, M., Achasov, M. N., Adlarson, P., Afedulidis, O., Ai, X. C., Aliberti, R., ... & Huang, X. T. (2024). Improved measurement of the branching fraction of $ h_ {c}\rightarrow\gamma\eta^\prime/\eta $ and search for $ h_ {c}\rightarrow\gamma\pi^ 0$. arXiv preprint arXiv:2405.11585.
dc.identifier.doi10.1007/JHEP08(2024)180
dc.identifier.issn10298479
dc.identifier.issue8
dc.identifier.scopus2-s2.0-85202939402
dc.identifier.urihttp://dx.doi.org/10.1007/JHEP08(2024)180
dc.identifier.urihttps://hdl.handle.net/20.500.12713/6283
dc.identifier.volume2024
dc.indekslendigikaynakScopus
dc.institutionauthorÇetin, Serkant Ali
dc.institutionauthoridSerkant Ali Çetin / 0000-0001-5050-8441
dc.language.isoen
dc.publisherSpringer Science and Business Media Deutschland GmbH
dc.relation.ispartofJournal of High Energy Physics
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectBranching Fraction
dc.subjecte+-e− Experiments
dc.titleImproved measurement of the branching fraction of hc → γη′/η and search for hc→ γπ0
dc.typeArticle

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