Eur. Phys. J. A (2020) 56: 70
https://doi.org/10.1140/epja/s10050-020-00043-w

Regular Article –Theoretical Physics

Extracting jet transport parameter from a multiphase transport model

¹ School of Physics and Electronic Science, Guizhou Normal University, Guiyang, 550001, China
² Key Laboratory of Nuclear Physics and Ion-beam Application (MOE), Institute of Modern Physics, Fudan University, Shanghai, 200433, China
³ Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China

^* e-mail: glma@fudan.edu.cn

Received: 17 April 2019
Accepted: 5 December 2019
Published online: 27 February 2020

Abstract

Within a multiphase transport model with a string-melting scenario, the jet transport parameter is extracted in Au+Au collisions at = 200 GeV and Pb+Pb collisions at = 2.76 TeV. The jet transport parameter is a key parameter in jet-quenching phenomena, which depends not only on the temperature of the QCD medium but also on jet energy. We observe that increases with increasing of the jet energy for both the partonic phase and the hadronic phase. The energy and path length dependences of in full heavy-ion evolution are consistent with the expectations of jet quenching. The correlation between jet transport parameter and dijet transverse momentum asymmetry is investigated. It is interesting to find that dijets with larger have larger length-averaged values. Our study suggests that dijets with different values can provide versatile tools for studying jet quenching and extracting jet transport parameters.