Study of e plus e- ? ?-?? plus at center-of-mass energies from 3.49 to 3.67 GeV
Küçük Resim Yok
Tarih
2023
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Amer Physical Soc
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Using data samples of e+e- collisions collected with the BESIII detector at eight center-of-mass energy points between 3.49 and 3.67 GeV, corresponding to an integrated luminosity of 670 pb-1, we present the upper limits of Born cross sections and the effective form factor for the process e+e- -> omega- over bar omega+. A fit to the cross sections using a perturbative QCD-derived energy-dependent function shows no significant threshold effect. The upper limit on the measured effective form factor is consistent with a theoretical prediction within the uncertainty of 1 sigma. These results provide new experimental information on the production mechanism of omega.
Açıklama
Anahtar Kelimeler
Electromagnetic Form-Factors, Annihilation, Tof
Kaynak
Physical Review D
WoS Q Değeri
N/A
Scopus Q Değeri
Q1
Cilt
107
Sayı
5
