Radial distribution of heavy quarks in jets in heavy-ion collisions
by
Sa Wang
(South China Normal University)
→
US/Eastern
Description
Angular correlations between heavy quark (HQ) and its tagged jet are potentially new tools to gain insight into the in-medium partonic interactions in relativistic heavy-ion collisions. In this talk, we will present the theoretical studies on the radial profiles of heavy quarks in jets in high-energy heavy-ion collisions. The in-medium parton propagations are described by a Monte Carlo transport model which uses the next-to-leading order (NLO) plus parton shower (PS) event generator SHERPA as input and includes elastic (collisional) and inelastic (radiative) interactions for heavy quarks as well as light partons. In p+p collisions, we find that at lower $p_T^Q$ the radial profiles of heavy flavors in jets are sensitive to the heavy quark mass. In Pb+Pb collisions at $\sqrt{s_{NN}}=5.02$ TeV, the radial distribution of D meson in jets significantly shifts to larger radii indicating a strong diffusion effect which is consistent with the recent CMS measurements. However, we observe an inverse modification pattern of the B mesons radial profiles in jets compared to that of D mesons: the jet quenching effects narrow the jet radial profile of B mesons in jets while broaden that of D mesons in jets. I will also discuss the angular de-correlations of $gamma$+HF in heavy-ion, which may serve as new probe to the in-medium $p_T$-broadening.
