Measurement of the cross section of e+e-??-?+ at center-of-mass energies between 3.510 and 4.843 GeV
Küçük Resim Yok
Tarih
2023
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Using e(+)e(-) collision data corresponding to a total integrated luminosity of 12.9 fb(-1) collected with the BESIII detector at the BEPCII collider, the exclusive Born cross sections and the effective form factors of the reaction e(+)e(-)->Xi(-)Xi(+) are measured via the single baryon-tag method at 23 center-of-mass energies between 3.510 and 4.843 GeV. Evidence for the decay psi(3770)->Xi(-)Xi(+) is observed with a significance of 4.5 sigma by analyzing the measured cross sections together with earlier BESIII results. For the other charmonium(-like) states psi(4040), psi(4160), Y(4230), Y(4360), psi(4415), and Y(4660), no significant signal of their decay to Xi(-)Xi(+) is found. For these states, upper limits of the products of the branching fraction and the electronic partial width at the 90% confidence level are provided.
Açıklama
Anahtar Kelimeler
E(+)-E(-) Experiments, Branching Fraction, Qcd, Electroweak Interaction
Kaynak
Journal of High Energy Physics
WoS Q Değeri
N/A
Scopus Q Değeri
Q2
Cilt
Sayı
11
