Effects of initial-state fluctuations on jet-energy loss Academic Article uri icon

abstract

  • The effect of initial-state fluctuations on jet-energy loss in relativistic heavy-ion collisions is studied in a 2+1-dimensional ideal hydrodynamic model. Within the next-to-leading order perturbative QCD description of hard scatterings, we find that a jet loses slightly more energy in the expanding quark-gluon plasma if the latter is described by the hydrodynamic evolution with fluctuating initial conditions compared to the case with smooth initial conditions. A detailed analysis indicates that this is mainly due to the positive correlation between the fluctuation in the production probability of parton jets from initial nucleon-nucleon hard collisions and the fluctuation in the medium density along the path traversed by the jet. This effect is larger in noncentral than in central relativistic heavy ion collisions and also for jet-energy loss that has a linear than a quadratic dependence on its path length in the medium. © 2013 American Physical Society.

altmetric score

  • 0.25

author list (cited authors)

  • Zhang, H., Song, T., & Ko, C. M.

citation count

  • 3

publication date

  • May 2013