Measurement of the branching fraction for the decay ??3686? ? ?K0SK0S
Küçük Resim Yok
Tarih
2023
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Amer Physical Soc
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Based on (448.1 +/- 2.9) x 106 psi(3686) events collected with the BESIII detector operating at the BEPCII collider, the decay psi(3686) -> phi K0SK0S is observed for the first time. Taking the interference between psi(3686) decay and continuum production into account, the branching fraction of this decay is measured to be B(psi (3686) -> phi K0SK0S) = (3.53 +/- 0.20 +/- 0.21) x 10-5, where the first uncertainty is statistical and the second is systematic. Combining with the world average value for B(J=psi -> phi K0SK0S), the ratio B(psi (3686) -> phi K0SK0S)=B(J=psi -> phi K0SK0S) is determined to be (6.0 +/- 1.6)%, which is sup -pressed relative to the 12% rule.
Açıklama
Anahtar Kelimeler
[No Keywords]
Kaynak
Physical Review D
WoS Q Değeri
N/A
Scopus Q Değeri
Q1
Cilt
108
Sayı
5
