The 14th Workshop on QCD Phase Transition and Relativistic Heavy-Ion Physics (QPT 2021)

The charged hadron production with collinearly-improved unintegrated gluon distribution in heavy-ion collisions

Not scheduled

15m

Conference Hall (Shangshan Hotel, Building 9)

Description

Based on the framework of Color Glass Condensate (CGC), we study the hadron production with collinearly-improved unintegrated gluon distribution which is obtained by numerical solving the collinearly-improved next-to-leading Balitsky-Kovchegov equation. We calculate the multiplicity and transverse momentum distribution of the charged hadron in p-p and p-A collisions at RHIC and LHC energies. We find that the predictive power of the CGC hadron production model is significant improved once the collinear corrections are taken into account. The collinearly-improved CGC hadron production model gives a rather good description of the charged hadron multiplicity and momentum distribution in 7 TeV, 2.36 TeV and 4.4 TeV at LHC, which shows a hint that the CGC may appear at LHC energies.