Parton shower evolution in medium and nuclear modification of photon-tagged jets in Pb+Pb collisions at the LHC

被引：0
|
作者：
Guang-You Qin
机构：
[1] Central China Normal University,Institute of Particle Physics
[2] Wayne State University,Department of Physics and Astronomy
[3] Duke University,Department of Physics
来源：
The European Physical Journal C | 2014年 / 74卷
关键词：
Parton Shower; Elastic Collision; Medium Modification; Nuclear Modification; Collisional Energy Loss;
D O I：
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学科分类号：
摘要：
We study the medium modification of jets correlated with large transverse momentum photons at the LHC via a transport and perturbative QCD hybrid model which incorporates the contributions from both elastic collisions and radiative energy loss experienced by the parton showers. Calculations are performed for the modification of the photon-tagged jet yield, the photon–jet energy imbalance, and the azimuthal distribution of away-side jets. The modifications of photon-tagged jets with different xT=pT,J/pT,γ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$x_T=p_{T,J}/p_{T,\gamma }$$\end{document} values are studied and they exhibit different centrality and jet cone size dependences due to traversing different medium lengths and density profiles. We further investigate the influence of the transverse and longitudinal jet transport coefficients on the nuclear modification of photon-tagged jet production and jet shape observables.
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