Speaker
Yu Feng
(Third Military Medical University, Chongqing,Southwest of China)
Description
We compute the energy dependence of the pt-integrated cross section of directly produced quarkonia in pp collisions at next-to-leading order within the nonrelativistic QCD framework. We treat the pt-integrated and the pt-differential cross sections as two different observables to investigate whether the CO LDMEs extracted from the fits of the pt-differential cross sections can predict the pt-integrated cross sections. We also consider the cross sections calculated in CSM and CEM. Our study do not support the past claims that color-octet transitions are dominantly responsible for low-pt quarkonium prodution.
Primary authors
Yu Feng
(Third Military Medical University, Chongqing,Southwest of China)
Jean-Philippe Lansberg
(IPN Orsay, Paris Sud U. / IN2P3-CNRS)
Jianxiong Wang
(IN)
