March 30, 2017 to April 1, 2017
Peking University
Asia/Shanghai timezone

Energy dependence of direct-quarkonium production in pp collisions from fixed-target to LHC energies:complete one-loop analysis.

Mar 30, 2017, 3:45 PM
30m
Peking University

Peking University

B105, West Building of School of Physics (Next to the Metro Station "PKU East Gate", across the street from the main PKU entrance)
Talk Proton-proton collisions Proton-proton collisions

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)

Presentation materials