Study of hc?3 (?+?-)?0, hc?2 (?+?-)?, hc?2 (?+?-)?0?, hc?2 (?+?-)?, and hc?p p ¯
Küçük Resim Yok
Tarih
2024
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
American Physical Society
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Based on (2712.4±14.1)×106 ?(3686) events collected with the BESIII detector, we study the decays hc?3(?+?-)?0, hc?2(?+?-)?, hc?2(?+?-)?0?, hc?2(?+?-)?, and hc?pp¯ via ?(3686)??0hc. The decay channel hc?3(?+?-)?0 is observed for the first time, and its branching fraction is determined to be (9.28±1.14±0.77)×10-3, where the first uncertainty is statistical and the second is systematic. In addition, first evidence is found for the modes hc?2(?+?-)?0? and hc?2(?+?-)? with significances of 4.8? and 4.7?, and their branching fractions are determined to be (7.55±1.51±0.77)×10-3 and (4.00±0.86±0.35)×10-3, respectively. No significant signals of hc?2(?+?-)? and hc?pp¯ are observed, and the upper limits of the branching fractions of these decays are determined to be <6.19×10-4 and <4.40×10-5 at the 90% confidence level, respectively. © 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.
Açıklama
Anahtar Kelimeler
Kaynak
Physical Review D
WoS Q Değeri
Scopus Q Değeri
Q1
Cilt
109
Sayı
7
