Conveners
Parallel 7: early time dynamics
- Aleksas Mazeliauskas (Heidelberg University (DE))
The transverse energy in heavy ion collisions is one of the key observables characterizing global properties of the Quark-Gluon Plasma (QGP). The transverse energy per unit pseudorapidity (dE$_T$/d$\eta$) probes the energy carried by the medium along the longitudinal direction, providing essential information related to the initial geometry and subsequent hydrodynamic evolution of the QGP....
Exploiting the first measurements of the same ion species in O+O collisons at RHIC and LHC, we propose an experimentally acessible observable to distinguish whether collective behavior builds up through a hydrodynamic expansion of a strongly interacting QGP or through few rescatterings in a non-equilibrated dilute medium. Our procedure allows to disentangle the effects of the initial state...
The far-from equilibrium dynamics of the pre-hydrodynamic quark-gluon plasma (QGP) formed in heavy ion collisions can be characterized by distinct stages, during each of which the system loses some memory of its initial condition, until only the hydrodynamic modes remain. This attractor behavior has been characterized previously in both strongly and weakly coupled descriptions. In particular,...
The study of the initial nonequilibrium stages in heavy-ion collisions is an exciting research frontier. In particular, for jet quenching observables, jet-medium interactions during the initial stages have been argued to be one of the major theoretical uncertainties. To calculate the medium-induced gluon spectrum and jet energy loss, knowledge of the momentum broadening kernel is required,...
The early glasma stage of heavy-ion collisions is characterized by strong color fields which deflect jet partons, resulting in sizable jet momentum broadening. An outstanding question is how this momentum broadening leads to jet quenching in the glasma and how important this quenching is for jet phenomenology. In this work we aim to answer these questions by performing the first calculation of...
In this work, we study the evolution of a jet, modelled as a linear perturbation of the distribution of quarks or gluons, in an out of equilibrium system of quarks and gluons. The hard probe and the bulk QCD matter are described in an unified approaching using QCD kinetic theory. This allows us to investigate the interplay between the hard and soft sectors of jets as well as those in the bulk....
