Heavy quark energy loss through polarization and radiation in the hot QCD medium

Abstract

We present a comparative study on the heavy quarks energy loss through medium polarization and gluon radiation in the quark-gluon plasma. To do so, we investigated the energy loss per unit length and drag coefficient for both cases. To have better contrast, we also obtained the nuclear modification factor employing Langevin dynamics. The comparison shows that the polarization effect dominates at lower momentum. The medium temperature also plays an important role in the comparison.

Energy loss of heavy quarks in the presence of magnetic field

“…Now, the diffusion coefficient is calculated from drag coefficients using the fluctuation-dissipation theorem, D = γET [84][85][86]. Here γ is calculated by using equation (9) as estimated in [41,87] q…”

“…Physically, the soft component of energy loss corresponds to the interaction of the parton with soft collective excitations of the medium. Recent studies by the authors of [37,40,41] have demonstrated that the soft contribution to energy loss plays a vital role in the overall energy loss of the test parton within the medium and in the context of jet quenching phenomenology. The energy loss due to soft contributions can be studied through the medium polarization effect.…”