Multiscale evolution of charmed particles in a nuclear medium

Parton energy-momentum exchange with the quark gluon plasma (QGP) is a multiscale problem. In this work, we calculate the interaction of charm quarks with the QGP within the higher twist formalism at high virtuality and high energy using the Modular All Twist Transverse-scattering Elastic-drag and Radiation (MATTER) model, while the low-virtuality and high-energy portion is treated via a linearized Boltzmann transport formalism. Coherence effect that reduces the medium-induced emission rate in the MATTER model is also taken into account through a virtuality-dependent (q) over cap, leaving the simultaneous dependence of (q) over cap on heavy quark mass and virtuality for future studies. The interplay between these two formalisms is studied phenomenologically and used to produce a first description of the D-meson and charged hadron nuclear modification factor RAA across multiple centralities. All calculations were carried out utilizing the Jet Energy-loss Tomography with a Statistically and Computationally Advanced Program Envelope framework.

Automated summary

In this work, the interaction between charm quarks and the quark gluon plasma (QGP) is studied using the higher twist formalism and the linearized Boltzmann transport formalism. The MATTER model is used for high virtuality and high energy interactions, while the coherence effect is taken into account. The interplay between these two formalisms is used to describe the nuclear modification factor RAA of D-mesons and charged hadrons across multiple centralities.