The VII-th International Conference on the Initial Stages of High-Energy Nuclear Collisions : Initial Stages 2023

Anisotropic fluctuations of momentum and angular momentum of heavy quarks in evolving Glasma

Not scheduled

2h

Københavns Universitetsbibliotek Nord

Poster The initial stages and nuclear structure in heavy-ion collisions Reception and poster session

Speaker

Marco Ruggieri

Description

We study the diffusion of heavy quarks in the early stages of high energy nuclear collisions. The background gluon fields are modeled by the standard MV initialization of the glasma, which is then evolved by means of the classical Yang-Mills equations. Heavy quarks are coupled to the evolving glasma fields via relativistic kinetic theory. We compute the momentum broadening as well as the angular momentum fluctuations of charm and beauty quarks in the early stage, which turn out to be anisotropic due to the anisotropy of the background gluon fields. We relate the non-Markovian diffusion of heavy quarks in the early stage to the existence of correlated colored filaments with size given by the inverse of the saturation scale. Impact on the nuclear modification factor is also addressed.