Medium-induced radiation with vacuum propagation in the pre-hydrodynamics phase

• DOI: 10.1007/jhep03(2023)189
• Publication Date: 2023-03-25T05:02:36Z
• Authors: Carlota Andres; Liliana Apolinário; Fabio Dominguez; Marcos Gonzalez M...; Carlos A. Salgado
• Keywords: Jet quenching

A bstract The recent discovery of the potential jet quenching observables to constrain initial stages after a heavy-ion collision makes imperative have better understanding process medium-induced radiation before formation quark-gluon plasma (QGP) and its impact on at high- p T . In this work, we generalize BDMPS-Z framework for account additional emissions occurring creation QGP. For simplicity, assume that during pre-hydrodynamics phase hard parton propagates as in vacuum. This set-up, allows us isolate contribution from by comparing with usual scenarios which emitter is created inside medium but different starting points. Using both numerical implementation fully resummed emission spectrum analytical approximations, find replacing an slab vacuum yields significant reduction low radiated gluon energies, while high-energy tails remain largely unmodified. Finally, assess effect propagation single-inclusive particle suppression R AA azimuthal asymmetry v 2 Our findings indicate considering prior hydrodynamization leads increase , thus corroborating importance treatment correct description observables.