On transverse momentum broadening in real-time lattice simulations of the glasma and in the weak-field limit

Abstract

In these proceedings, we report on our numerical lattice simulations of partons traversing the boost-invariant, non-perturbative glasma as created at the early stages of collisions at RHIC and LHC. Since these highly energetic partons are produced from hard scatterings during heavy-ion collisions, they are already affected by the first stage of the medium's time evolution, the glasma, which is the pre-equilibrium precursor state of the quark-gluon plasma. We find that partons quickly accumulate transverse momentum up to the saturation momentum during the glasma stage. Moreover, we observe an interesting anisotropy in transverse momentum broadening of partons with larger broadening in the rapidity than in the azimuthal direction. Its origin can be related to correlations among the longitudinal color-electric and color-magnetic flux tubes in the initial state of the glasma. We compare these observations to the semi-analytic results obtained by a weak-field approximation, where we also find such an anisotropy in a parton's transverse momentum broadening.

8 pages, 3 figures, submitted to vConf2021 conference proceedings

References in corpus (10)

• The Color Glass Condensate
• Calculating the Jet Quenching Parameter from AdS/CFT
• Some Features of the Glasma
• Event-by-event gluon multiplicity, energy density and eccentricities at RHIC and LHC
• Jet physics in heavy-ion collisions
• Measuring Quark-Gluon-Plasma Thermalization Time with Dileptons
• Jet momentum broadening in the pre-equilibrium Glasma
• Anisotropic momentum broadening in the 2+1D Glasma: analytic weak field approximation and lattice simulations
• Initial energy density and gluon distribution from the Glasma in heavy-ion collisions
• Momentum broadening in unstable quark-gluon plasma