Drag Induced Radiation and Multi-Stage Effects in Heavy-Flavor Energy Loss

Abstract

It is argued that heavy-quarks traversing a Quark Gluon Plasma, undergo a multi-stage modification process, similar to the case of light flavors. Such an approach is applied to heavy-quark energy loss, which includes a rare-scattering, multiple emission formalism at momenta large compared to the mass (sensitive only to the transverse diffusion coefficient $\hat{q}$), and a single scattering induced emission formalism (Gunion-Bertsch) at momenta comparable to the mass of the quark [sensitive to $\hat{q}$, and the longitudinal drag ($\hat{e}$) and diffusion (${\hat{e}}_2$) coefficients]. The application of such a multi-stage approach within a 2+1D viscous fluid-dynamical simulation leads to simultaneous agreement with experimental data for the nuclear modification factor of both $B$ and $D$ mesons, as measured by the CMS collaboration at the LHC. The extracted transport coefficients are found to be consistent with those for light flavors.

6 pages, 3 figures

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Cited by in corpus (12)

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• Inclusive jet and hadron suppression in a multistage approach
• Flavor hierarchy of jet quenching in relativistic heavy-ion collisions
• QLBT: A linear Boltzmann transport model for heavy quarks in a quark-gluon plasma of quasi-particles
• Searching for QGP droplets with high-$p_T$ hadrons and heavy flavor
• Heavy flavor quenching and flow: the roles of initial condition, pre-equilibrium evolution and in-medium interaction
• Longitudinal dependence of open heavy flavor $R_{\text{AA}}$ in relativistic heavy-ion collisions
• Open Heavy Flavors in Nuclear Collisions: Theory Overview
• Heavy Quark Radiation in the Quark-Gluon Plasma in the Moliere Theory: Angular Distribution of the Radiation
• Heavy quark diffusion and radiation at intermediate momentum
• First 4D lattice calculation of transport coefficient $\hat{q}$ for pure gluon plasma