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

Künye