| Article | |
| Report number | arXiv:1902.03231 ; JLAB-THY-19-2888 ; CERN-TH-2019-012 |
| Title | Jet quenching as a probe of the initial stages in heavy-ion collisions |
| Author(s) | Andres, Carlota (Jefferson Lab) ; Armesto, Néstor (Santiago de Compostela U., IGFAE) ; Niemi, Harri (Jyvaskyla U. ; Helsinki U.) ; Paatelainen, Risto (Helsinki U. ; CERN) ; Salgado, Carlos A. (Santiago de Compostela U., IGFAE) |
| Publication | 2020-04-10 |
| Imprint | 2019-02-08 |
| Number of pages | 7 |
| In: | Phys. Lett. B 803 (2020) 135318 |
| DOI | 10.1016/j.physletb.2020.135318 (publication) |
| Subject category | nucl-th ; Nuclear Physics - Theory ; nucl-ex ; Nuclear Physics - Experiment ; hep-ph ; Particle Physics - Phenomenology |
| Abstract | Jet quenching provides a very flexible variety of observables which are sensitive to different energy- and time-scales of the strongly interacting matter created in heavy-ion collisions. Exploiting this versatility would make jet quenching an excellent chronometer of the yoctosecond structure of the evolution process. Here we show, for the first time, that a combination of jet quenching observables is sensitive to the initial stages of heavy-ion collisions, when the approach to local thermal equilibrium is expected to happen. Specifically, we find that in order to reproduce at the same time the inclusive particle production suppression, $R_{AA}$, and the high-$p_T$ azimuthal asymmetries, $v_2$, energy loss must be strongly suppressed for the first $\sim 0.6$ fm. This exploratory analysis shows the potential of jet observables, possibly more sophisticated than the ones studied here, to constrain the dynamics of the initial stages of the evolution. |
| Copyright/License | publication: © 2020-2024 The Authors (License: CC-BY-4.0) preprint: (License: arXiv nonexclusive-distrib 1.0) |
Corresponding record in: Inspire
Record created 2019-06-21, last modified 2023-11-17