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Title: Factorization of Jet Cross Sections in Heavy-Ion Collisions

Abstract

We propose a new phenomenological approach to establish QCD factorization of jet cross sections in the heavy-ion environment. Starting from a factorization formalism in proton-proton collisions, we introduce medium modified jet functions to capture the leading interaction of jets with the hot and dense QCD medium. A global analysis using a Monte Carlo sampling approach is performed in order to reliably determine the new jet functions from the nuclear modification factor of inclusive jets at the LHC. We find that gluon jets are significantly more suppressed due to the presence of the medium than quark jets. In addition, we observe that the jet radius dependence is directly related to the relative suppression of quark and gluon jets. Our approach could help to improve the extraction of medium properties from data.

Authors:
 [1];  [2];  [3];  [4]
  1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Old Dominion Univ., Norfolk, VA (United States)
  4. Univ. Regensburg, Regensburg (Germany)
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1529040
Alternate Identifier(s):
OSTI ID: 1530192
Report Number(s):
JLAB-THY-19-2896; DOE/OR/-23177-4646; arXiv:1903.01993
Journal ID: ISSN 0031-9007; PRLTAO
Grant/Contract Number:  
AC05-06OR23177; AC02-05CH11231; SC0012704
Resource Type:
Published Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 122; Journal Issue: 25; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Qiu, Jian-Wei, Ringer, Felix, Sato, Nobuo, and Zurita, Pia. Factorization of Jet Cross Sections in Heavy-Ion Collisions. United States: N. p., 2019. Web. doi:10.1103/PhysRevLett.122.252301.
Qiu, Jian-Wei, Ringer, Felix, Sato, Nobuo, & Zurita, Pia. Factorization of Jet Cross Sections in Heavy-Ion Collisions. United States. doi:10.1103/PhysRevLett.122.252301.
Qiu, Jian-Wei, Ringer, Felix, Sato, Nobuo, and Zurita, Pia. Mon . "Factorization of Jet Cross Sections in Heavy-Ion Collisions". United States. doi:10.1103/PhysRevLett.122.252301.
@article{osti_1529040,
title = {Factorization of Jet Cross Sections in Heavy-Ion Collisions},
author = {Qiu, Jian-Wei and Ringer, Felix and Sato, Nobuo and Zurita, Pia},
abstractNote = {We propose a new phenomenological approach to establish QCD factorization of jet cross sections in the heavy-ion environment. Starting from a factorization formalism in proton-proton collisions, we introduce medium modified jet functions to capture the leading interaction of jets with the hot and dense QCD medium. A global analysis using a Monte Carlo sampling approach is performed in order to reliably determine the new jet functions from the nuclear modification factor of inclusive jets at the LHC. We find that gluon jets are significantly more suppressed due to the presence of the medium than quark jets. In addition, we observe that the jet radius dependence is directly related to the relative suppression of quark and gluon jets. Our approach could help to improve the extraction of medium properties from data.},
doi = {10.1103/PhysRevLett.122.252301},
journal = {Physical Review Letters},
number = 25,
volume = 122,
place = {United States},
year = {2019},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevLett.122.252301

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