Measurements of the branching fractions of eta(c) -> K+ K- pi(0), (KSK +/-)-K-0 pi(-/+), 2(pi(+) pi(-) pi(0)), and p(p)over-bar
Yükleniyor...
Dosyalar
Tarih
2019-07-22
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
AMER PHYSICAL SOC
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Using data samples collected with the BESIII detector at center-of-mass energies root s = 4.23, 4.26, 4.36, and 4.42 GeV, we measure the branching fractions of eta(c) -> K+ K- pi(0), (KSK +/-)-K-0 pi(-/+), 2(pi(+) pi(-) pi(0)), and p (p) over bar, via the process e(+) e(-) -> pi(+) pi(-) h(c), h(c) -> gamma eta(c). The corresponding results are (1.15 +/- 0.12 +/- 0.10)%, (2.60 +/- 0.21 +/- 0.20)%, (15.2 +/- 1.8 +/- 1.7)%, and (0.120 +/- 0.026 +/- 0.015)%, respectively. Here the first uncertainties are statistical, and the second ones systematic. Additionally, the charged track multiplicity of eta(c) decays is measured for the first time.
Açıklama
Anahtar Kelimeler
Kaynak
PHYSICAL REVIEW D
WoS Q Değeri
Q1
