Directed flow of open charm in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV using a quark coalescence model

Abstract

The directed flow ($v_1$) of open charm meson ($D^0$) is studied in Au+Au collisions at $\sqrt{s_{NN}}$ = 200~GeV using A Multi-Phase Transport (AMPT) model framework with partonic interactions (string melting version). Within this framework, it is found that although the initial spatial eccentricity (${\epsilon }_1$) of charm quark is smaller than light quarks, the charm quark $v_1$ magnitude is found to be approximately 7 times larger than that of the light u quark at large rapidity. This indicates that the charm quarks can retain more information from initial condition than the light quarks. We have studied the directed flow of $D^0$ as a function of rapidity and transverse momentum using quark coalescence as the mechanism for hadron production. Like charm quark, the $D^0$ $v_1$ magnitude is found to be about 7 times larger than that of the light ($\pi$) hadrons at large rapidity.

6 pages, 5 figures, accepted for publication in Phys. Rev. C

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Cited by in corpus (14)

• Further developments of a multi-phase transport model for relativistic nuclear collisions
• First observation of the directed flow of $D^0$ and $\overline{D^0}$ in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}$ = 200~GeV
• Interplay of drag by hot matter and electromagnetic force on the directed flow of heavy quarks
• Charge-dependent flow as evidence of strong electromagnetic fields in heavy-ion collisions
• Probing the initial longitudinal density profile and electromagnetic field in ultrarelativistic heavy-ion collisions with heavy quarks
• Electromagnetic fields and directed flow in large and small colliding systems at ultrarelativistic energies
• Energy dependence study of directed flow in Au+Au collisions using an improved coalescence in AMPT model
• Improvement of heavy flavor productions in a multi-phase transport model updated with modern nPDFs
• Directed flow of charged particles within idealized viscous hydrodynamics at energies available at the BNL Relativistic Heavy Ion Collider and at the CERN Large Hadron Collider
• Longitudinal dependence of open heavy flavor $R_{\text{AA}}$ in relativistic heavy-ion collisions
• Probing the profile of bulk matter in p+Pb collisions via directed flow of heavy quarks
• Interactions between heavy quarks and tilted QGP fireballs in 200 AGeV Au+Au collisions
• Longitudinal dependence of B and D meson nuclear modifications in heavy-ion collisions at RHIC and the LHC
• System size dependence of charged hadrons directed flow at $\sqrt{s_{NN}}$ = 200 GeV using a multi-phase transport model