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Title: Centrality dependence of high energy jets in p + Pb collisions at energies available at the CERN Large Hadron Collider

We investigate the recently measured centrality dependence of high energy jets in proton-lead collisions at the LHC. Here, we hypothesize that events with jets of very high energy (a few hundred GeV) are characterized by a suppressed number of soft particles, thus shifting these events into more peripheral bins. This naturally results in the suppression (enhancement) of the nuclear modification factor, R pA, in central (peripheral) collisions. Our calculations suggest that a moderate suppression of the order of 20%, for 10 3 GeV jets, can quantitatively reproduce the experimental data. Finally, we further extract the suppression factor as a function of jet energy and test our conjecture using available R pA data for various centralities.
Authors:
 [1] ;  [2] ;  [3]
  1. AGH - Univ. of Science and Technology, Krakow (Poland). Faculty of Physics and Applied Computer Science; Brookhaven National Lab. (BNL), Upton, NY (United States). RIKEN Research Center
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). RIKEN Research Center; Western Michigan Univ., Kalamazoo MI (United States)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). RIKEN Research Center; City Univ. (CUNY), NY (United States). Buruch College
Publication Date:
Report Number(s):
BNL-112276-2016-JA
Journal ID: ISSN 2469-9985; PRVCAN; R&D Project: PO-3
Grant/Contract Number:
SC0012704; SC0007017; DEC-2013/09/B/ST2/00497; DEC-2014/15/B/ST2/00175
Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 93; Journal Issue: 4; Journal ID: ISSN 2469-9985
Publisher:
APS
Research Org:
Brookhaven National Lab. (BNL), Upton, NY (United States). RIKEN Research Center
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Riken BNL Research Center
OSTI Identifier:
1260150
Alternate Identifier(s):
OSTI ID: 1246518