摘要
By adopting the adiabatic assumption in the cooling process,we discuss a novel mechanism ofΥ(1S)suppression that occurs due to the fast heating process at the early stage of the fireball,instead of its finite decay width in a finite temperature medium generated by heavy ion collisions.We calculate the transition probability after the fast heating dissociation as a function of the temperature of the medium and the nuclear modification factor in central collisions and find that the suppression is not negligible at RHIC,even if the width ofΥ(1S)becomes zero.
作者
Yunpeng Liu
Baoyi Chen
刘云朋;陈保义(Department of Applied Physics,School of Science,Tianjin University,Tianjin 300072,China)
基金
Supported by the NSFC (11547043, 11705125)
the “Qinggu” project (1701, 40110) of Tianjin University
