Early evolution constrained by high-p_T QGP tomography

2020/08/31 by Stefan Stojku, Jussi Auvinen, Marko Djordjevic +3
Physics and Astronomy · #Algorithm #Biology #Computer science #Energy (signal processing) #High energy #High-Energy Particle Collisions Research #Observable #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quark #Transverse plane #hep-ph #nucl-th

paper · pdf · doi:10.1103/physrevc.105.l021901

published as Phys. Rev. C 105, L021901 (2022) · 5 pages, 4 figures

openalex publication_date 2022/02/16 · openalex created_date 2022/02/24 · arxiv created 2022/03/02 · arxiv updated 2022/03/03 · openalex updated_date 2026/08/01

Abstract

We show that high-p_T R_AA and v₂ are sensitive to the early expansion dynamics, and that the high-p_T observables prefer delayed onset of energy loss and transverse expansion. To calculate high-p_T R_AA and v₂, we employ our newly developed DREENA-A framework, which combines state-of-the-art dynamical energy loss model with 3+1-dimensional hydrodynamical simulations. The model applies to both light and heavy flavor, and we predict a larger sensitivity of heavy flavor observables to the onset of transverse expansion. This presents the first time when bulk QGP behavior has been constrained by high-p_⊥ observables and related theory, i.e., by so-called QGP tomography.

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