Measurement of the branching fraction of the doubly cabibbo-suppressed decay D0 ?k+?-?0 and search for D0 ?k+?-?0?0
Yükleniyor...
Tarih
2022
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
American Physical Society
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Using 2.93 fb-1 of e+e- collision data collected at a center-of-mass energy of 3.773 GeV with the BESIII detector, we present a measurement of the branching fraction of the doubly Cabibbo-suppressed (DCS) decay D0?K+?-?0 and a search for the DCS decay D0?K+?-?0?0. The branching fraction of D0?K+?-?0 is determined to be [3.13-0.56+0.60(stat)±0.15(syst)]×10-4. No signal is observed for D0?K+?-?0?0, and an upper limit of 3.6×10-4 is set on the branching fraction at the 90% CL. We combine these results with the world-average branching fractions of their counterpart Cabibbo-favored decays to determine the ratios of the DCS over the Cabibbo-favored branching fractions, B(D0?K+?-?0)/B(D0?K-?+?0)=(0.22±0.04)% and B(D0?K+?-?0?0)/B(D0?K-?+?0?0)<0.40% at the 90% CL which correspond to (0.75±0.14)tan4?C and 1.37×tan4?C, respectively, where ?C is the Cabibbo mixing angle. © 2022 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
Q1
Scopus Q Değeri
Q1
Cilt
105
Sayı
11
Künye
Ablikim, M., Achasov, M. N., Adlarson, P., Albrecht, M., Aliberti, R., Amoroso, A., . . . (BESIII Collaboration). (2022). Measurement of the branching fraction of the doubly cabibbo-suppressed decay D0 →k+π-π0 and search for D0 →k+π-π0π0. Physical Review D, 105(11) doi:10.1103/PhysRevD.105.112001
