Jet quenching as a probe of the initial stages in heavy-ion collisions

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Andres , C , Armesto , N , Niemi , H , Paatelainen , R & Salgado , C A 2020 , ' Jet quenching as a probe of the initial stages in heavy-ion collisions ' , Physics Letters B , vol. 803 , 135318 .

Title: Jet quenching as a probe of the initial stages in heavy-ion collisions
Author: Andres, Carlota; Armesto, Néstor; Niemi, Harri; Paatelainen, Risto; Salgado, Carlos A.
Contributor organization: Helsinki Institute of Physics
Particle Physics and Astrophysics
Date: 2020-04-10
Language: eng
Number of pages: 7
Belongs to series: Physics Letters B
ISSN: 0370-2693
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, RAA, and the high-pT azimuthal asymmetries, v2, energy loss must be strongly suppressed for the first ∼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.
Subject: ENERGY
Initial stages
Jet quenching
114 Physical sciences
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion

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