Search for ηc (2S) →π+π-ηc and ηc (2S) →π+π- KS0 K±π∓ decays

dc.authorscopusidOnur Buğra Kolcu / 57936993500
dc.authorscopusidSerkant Ali Çetin / 34567544400
dc.authorwosidOnur Buğra Kolcu / P-4990-2015
dc.authorwosidSerkant Ali Çetin / AGF-0147-2022
dc.contributor.authorAblikim, M.
dc.contributor.authorAchasov M.N.
dc.contributor.authorAdlarson P.
dc.contributor.authorÇetin, Serkant Ali
dc.contributor.authorKolcu, Onur Buğra
dc.date.accessioned2025-04-18T09:49:52Z
dc.date.available2025-04-18T09:49:52Z
dc.date.issued2024
dc.departmentİstinye Üniversitesi, Rektörlük, Temel Bilimler Bölümü
dc.description.abstractBased on (27.12 +/- 0.14) x 10(8) psi(2S) events collected by the BESIII detector, we search for the decay eta(c)(2S) -> pi(+)pi(-)eta(c) via psi(2S) -> gamma eta(c)(2S). No significant signal is observed, and the upper limit on the product branching fraction B(psi(2S) -> gamma eta(c) (2S)) x B(eta(c) (2S) -> pi(+)pi(-)eta(c)) is determined to be 2.21 x 10(-5) at the 90% confidence level. In addition, the eta(c)(2S) -> pi(+)pi(-KSK +/-)-K-0 pi(-/+) decay is studied via psi(2S) -> gamma eta(c)(2S) and is observed with a statistical significance of 10 sigma for the first time. The branching fraction of eta(c)(2S) -> pi(+)pi(-KSK +/-)-K-0 pi(-/+) is determined to be (1.33 +/- 0.11 +/- 0.40 +/- 0.95)x10(-2), where the first uncertainty is statistical, the second is systematic, and the third uncertainty is due to the quoted B(psi(2S) -> gamma eta(c)(2S)).
dc.identifier.citationAblikim, M., Achasov, M. N., Adlarson, P., Afedulidis, O., Ai, X. C., Aliberti, R., ... & Huang, G. S. (2024). Search for η c (2 S)→ π+ π-η c and η c (2 S)→ π+ π-KS 0 K±π∓ decays. Physical Review D, 109(7), 072017.
dc.identifier.doi10.1103/PhysRevD.109.072017
dc.identifier.endpage13
dc.identifier.issn24700010
dc.identifier.issue7
dc.identifier.scopus2-s2.0-85192753739
dc.identifier.scopusqualityQ1
dc.identifier.startpage1
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevD.109.072017
dc.identifier.urihttps://hdl.handle.net/20.500.12713/6876
dc.identifier.volume109
dc.identifier.wosWOS:001270050900001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorÇetin, Serkant Ali
dc.institutionauthorKolcu, Onur Buğra
dc.institutionauthoridSerkant Ali Çetin / 0000-0001-5050-8441
dc.institutionauthoridOnur Buğra Kolcu / 0000-0002-9177-1286
dc.language.isoen
dc.publisherAmerican physical society
dc.relation.ispartofPhysical review d
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.titleSearch for ηc (2S) →π+π-ηc and ηc (2S) →π+π- KS0 K±π∓ decays
dc.typeArticle

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