The Production Of Open And Closed Charms In Relativistic Heavy Ion Collisions

In this thesis, we focus on the production of open and closed charms at RHIC and LHC energy.In relativistic heavy ion collisions, the production of J/ψ comes from two parts,one is from the initial production, the other is from regeneration,in other words, that J/ψ is made from the combination of charm quark and anti-charm quark at Quark Gluon Plasma.At RHIC energy the mechanism of regeneration is necessary, while at LHC energy it is the most important. For closed charm, the D meson,which is made of a charm quark and a light quark.For the reason that the mass of the charm quark is much heavier than the light one,thus the dynamical properties of the D meson are mainly determined by the charm quark.So the closed and open charm must have some relation.First we employ the transport model to study the J/ψ as a continuation of the previous work, calculate the elliptic flow and the angle distribution.Also we calculate the corresponding quantities of the D meson.From the comparison of each other,we get the conclusion that the open and closed charms have relations and that can be observed at LHC energy. At last we calculate the nuclear modification of the D meson at√SNN=200GeV and√SNN=5500GeV...