Speaker
Dr
Jianguo Bian
(Institute of High Energy Physics, Beijing, China)
Description
Using large data samples of di-muon events, CMS has performed detailed measurements in the field of quarkonium production. Differential cross-sections of (prompt) J/psi, psi(2S) and Y(nS) states in pT and rapidity will be presented, as well as studies of P-wave charmonia (chi_c), using the decay mode J/psi + gamma where the photon converts in an e+e- pair inside the detector. All our measurements will be compared to several theoretical predictions, including NLO nonrelativistic QCD.
We, will in particular, present for the first time results on double-J/psi production, as well very recent results on two exotic quarkonium states.
Author
Dr
Jianguo Bian
(Institute of High Energy Physics, Beijing, China)
