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  • Letter
  • Open Access

Global extraction of the jet transport coefficient in cold nuclear matter

Peng Ru1,2, Zhong-Bo Kang3,4, Enke Wang1,2,*, Hongxi Xing1,2,†, and Ben-Wei Zhang5

  • 1Guangdong Provincial Key Laboratory of Nuclear Science, Institute of Quantum Matter, South China Normal University, Guangzhou 510006, China
  • 2Guangdong-Hong Kong Joint Laboratory of Quantum Matter, Southern Nuclear Science Computing Center, South China Normal University, Guangzhou 510006, China
  • 3Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
  • 4Mani L. Bhaumik Institute for Theoretical Physics, University of California, Los Angeles, California 90095, USA
  • 5Key Laboratory of Quark & Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University, Wuhan 430079, China

  • *wangek@scnu.edu.cn
  • †hxing@m.scnu.edu.cn
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Phys. Rev. D 103, L031901 – Published 26 February, 2021

DOI: https://doi.org/10.1103/PhysRevD.103.L031901

Abstract

Within the framework of the generalized QCD factorization formalism, a set of nuclear-dependent observables all arise from the quark-gluon and gluon-gluon correlation functions, which are closely connected to the well-known jet transport coefficient (q^) for the nucleus. In this paper, we perform the first global analysis of q^ for cold nuclear matter with a kinematics dependent parametrization. The analysis takes into account the world data on transverse momentum broadening in semi-inclusive electron-nucleus deep inelastic scattering, Drell-Yan dilepton and heavy quarkonium production in proton-nucleus collisions, as well as the nuclear modification of the structure functions in deep inelastic scattering, comprising a total of 215 data points from 8 datasets. Within our scheme, we clarify quantitatively the universality and kinematics dependence of the nuclear medium property as encoded in q^. We expect that the determined parametrization of q^ in cold nuclear matter will have significant impact on precise identification of the transport property of hot dense medium created in heavy ion collisions.

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Phys. Rev. D 103, L031901– Published 26 February, 2021
  • Received 3 August 2019
  • Revised 30 May 2020
  • Accepted 8 February 2021
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