Charmonium production from nonequilibrium charm and anticharm quarks in quark-gluon plasma Academic Article uri icon


  • Parameterizing the charm and anticharm quark momentum distributions by the Tsallis distribution, we study the nonequilibrium effect on the charmonium production rate in a quark-gluon plasma up to the next-to-leading order in perturbative QCD. We find that nonequilibrium charm and anticharm quarks suppress the charmonium production rate compared to that from equilibrated ones. We further show that the suppression factor calculated with the charm quark relaxation time, which has frequently been used in the literature, is close to our results. 2012 American Physical Society.

published proceedings

  • Physical Review C

author list (cited authors)

  • Song, T., Han, K. C., & Ko, C. M.

citation count

  • 18

complete list of authors

  • Song, Taesoo||Han, Kyong Chol||Ko, Che Ming

publication date

  • May 2012