Study of the e+e- ? ?+ ?- ? process at center-of-mass energies between 4.0 and 4.6 GeV
Küçük Resim Yok
Tarih
2023
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Using 15.6 fb(-1) of e(+)e(-) collision data collected at twenty-four center-of-mass energies from 4.0 to 4.6 GeV with the BESIII detector, the helicity amplitudes of the process e(+)e(-) -> (+)pi(-)omega are analyzed for the first time. Born cross section measurements of two-body intermediate resonance states with statistical significance greater than 5 sigma are presented, such as f(0)(500), f(0)(980), f(2)(1270), f(0)(1370), b(1)(1235)(+/-), and rho(1450)(+/-). In addition, evidence of a resonance state in e(+)e(-) -> pi(+)pi(-)omega production is found. The mass of this state obtained by line shape fitting is about 4.2 GeV/c(2), which is consistent with the production of psi(4160) or Y(4220).
Açıklama
Anahtar Kelimeler
E(+)-E(-) Experiments, Qcd, Quarkonium
Kaynak
Journal of High Energy Physics
WoS Q Değeri
N/A
Scopus Q Değeri
Q2
Cilt
Sayı
8
