Precision measurement of the branching fraction of J/ψ →k+K- via ψ (2S) →π+π-J/ψ
Küçük Resim Yok
Tarih
2024
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
American physical society
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Using a sample of 448.1×106 ψ(2S) events collected with the BESIII detector, we perform a study of the decay J/ψ→K+K- via ψ(2S)→π+π-J/ψ. The branching fraction of J/ψ→K+K- is determined to be BK+K-=(3.072±0.023(stat)±0.050(syst))×10-4, which is consistent with previous measurements but with significantly improved precision.
Açıklama
Anahtar Kelimeler
Kaynak
Physical review d
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
110
Sayı
3
Künye
Kalantar-Nayestanaki, N., Kavatsyuk, M., Messchendorp, J., & BESIII Collaboration. (2024). Precision measurement of the branching fraction of 𝐽/𝜓→ 𝐾+ 𝐾− via 𝜓(2 𝑆)→ 𝜋+ 𝜋− 𝐽/𝜓. Physical Review D, 110(3), 032006.
