Observation and branching fraction measurement of the decay J =? ? p ?+K0S+c:c
Küçük Resim Yok
Tarih
2024
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Amer Physical Soc
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The first observation of the decays J=iy -> p over bar r+K0S and J=iy -> pr over bar -K0S is reported using (10087 +/- 44) x 106 J=iy events recorded by the BESIII detector at the BEPCII storage ring. The branching fractions of each channel are determined to be B(J=iy -> p over bar r+K0S) = (1.361 +/- 0.006 +/- 0.025) x 10-4, and B(J=iy -> pr over bar -K0S) = (1.352 +/- 0.006 +/- 0.025) x 10-4. The combined result is B(J=iy -> p over bar r+K0S+ c:c:) = (2.725 +/- 0.009 +/- 0.050) x 10-4, where the first uncertainty is statistical and the second systematic. The results presented are in good agreement with the branching fractions of the isospin partner decay J=iy -> pK-r over bar 0 + c:c:
Açıklama
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[No Keywords]
Kaynak
Physical Review D
WoS Q Değeri
N/A
Scopus Q Değeri
Q1
Cilt
109
Sayı
1
