Ara
Toplam kayıt 262, listelenen: 261-262
Observation of e +e - › ? 0? 0hc and a neutral charmoniumlike structure Zc(4020)0
(2014)
Using data collected with the BESIII detector operating at the Beijing Electron Positron Collider at center-of-mass energies of s?=4.23, 4.26, and 4.36 GeV, we observe e+e-›?0?0hc for the first time. The Born cross sections ...
Study of BESIII Trigger Efficiencies with the 2018 J/psi Data
(2021)
Using a dedicated data sample taken in 2018 on the J/psi peak, we perform a detailed study of the trigger efficiencies of the BESIII detector. The efficiencies are determined from three representative physics processes, ...