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Title: Suppression of high-p{sub T} hadrons in Pb+Pb collisions at energies available at the CERN Large Hadron Collider

Abstract

The nuclear modification factor R{sub AA}(p{sub T}) for large transverse momentum pion spectra in Pb+Pb collisions at {radical}(s)=2.76 TeV is predicted within the next-to-leading order perturbative QCD parton model. The effect of jet quenching is incorporated through medium-modified fragmentation functions within the higher-twist approach. The jet transport parameter that controls medium modification is proportional to the initial parton density, and the coefficient is fixed by data on the suppression of large-p{sub T} hadron spectra obtained at the BNL Relativistic Heavy Ion Collider. Data on charged hadron multiplicity dN{sub ch}/d{eta}=1584{+-}80 in central Pb+Pb collisions from the ALICE experiment at the CERN Large Hadron Collider are used to constrain the initial parton density both for determining the jet transport parameter and the 3 + 1 dimensional (3 + 1D) ideal hydrodynamic evolution of the bulk matter that is employed for the calculation of R{sub PbPb}(p{sub T}) for neutral pions.

Authors:
; ;  [1];  [2];  [1]
  1. Institute of Particle Physics, Huazhong Normal University, Wuhan 430079 (China)
  2. Department of Physics, University of Tokyo, Tokyo 113-0033 (Japan)
Publication Date:
OSTI Identifier:
21596771
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 84; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevC.84.034902; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ALICE; ATOM-ATOM COLLISIONS; BNL; BROOKHAVEN RHIC; CERN LHC; COLLISIONS; FOUR-DIMENSIONAL CALCULATIONS; FRAGMENTATION; LEAD; MULTIPLICITY; PERTURBATION THEORY; PIONS NEUTRAL; QUANTUM CHROMODYNAMICS; QUENCHING; SPECTRA; TEV RANGE 01-10; TRANSVERSE MOMENTUM; ACCELERATORS; ATOM COLLISIONS; BOSONS; CYCLIC ACCELERATORS; ELEMENTARY PARTICLES; ELEMENTS; ENERGY RANGE; FIELD THEORIES; HADRONS; HEAVY ION ACCELERATORS; LINEAR MOMENTUM; MAGNETIC MIRRORS; MESONS; METALS; NATIONAL ORGANIZATIONS; OPEN PLASMA DEVICES; PIONS; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; STORAGE RINGS; SYNCHROTRONS; TEV RANGE; THERMONUCLEAR DEVICES; US AEC; US DOE; US ERDA; US ORGANIZATIONS

Citation Formats

Xiaofang, Chen, Enke, Wang, Hanzhong, Zhang, Hirano, Tetsufumi, Nuclear Science Division, MS 70R0319, Lawrence Berkeley National Laboratory, Berkeley, California 94720, Xinnian, Wang, and Nuclear Science Division, MS 70R0319, Lawrence Berkeley National Laboratory, Berkeley, California 94720. Suppression of high-p{sub T} hadrons in Pb+Pb collisions at energies available at the CERN Large Hadron Collider. United States: N. p., 2011. Web. doi:10.1103/PHYSREVC.84.034902.
Xiaofang, Chen, Enke, Wang, Hanzhong, Zhang, Hirano, Tetsufumi, Nuclear Science Division, MS 70R0319, Lawrence Berkeley National Laboratory, Berkeley, California 94720, Xinnian, Wang, & Nuclear Science Division, MS 70R0319, Lawrence Berkeley National Laboratory, Berkeley, California 94720. Suppression of high-p{sub T} hadrons in Pb+Pb collisions at energies available at the CERN Large Hadron Collider. United States. doi:10.1103/PHYSREVC.84.034902.
Xiaofang, Chen, Enke, Wang, Hanzhong, Zhang, Hirano, Tetsufumi, Nuclear Science Division, MS 70R0319, Lawrence Berkeley National Laboratory, Berkeley, California 94720, Xinnian, Wang, and Nuclear Science Division, MS 70R0319, Lawrence Berkeley National Laboratory, Berkeley, California 94720. Thu . "Suppression of high-p{sub T} hadrons in Pb+Pb collisions at energies available at the CERN Large Hadron Collider". United States. doi:10.1103/PHYSREVC.84.034902.
@article{osti_21596771,
title = {Suppression of high-p{sub T} hadrons in Pb+Pb collisions at energies available at the CERN Large Hadron Collider},
author = {Xiaofang, Chen and Enke, Wang and Hanzhong, Zhang and Hirano, Tetsufumi and Nuclear Science Division, MS 70R0319, Lawrence Berkeley National Laboratory, Berkeley, California 94720 and Xinnian, Wang and Nuclear Science Division, MS 70R0319, Lawrence Berkeley National Laboratory, Berkeley, California 94720},
abstractNote = {The nuclear modification factor R{sub AA}(p{sub T}) for large transverse momentum pion spectra in Pb+Pb collisions at {radical}(s)=2.76 TeV is predicted within the next-to-leading order perturbative QCD parton model. The effect of jet quenching is incorporated through medium-modified fragmentation functions within the higher-twist approach. The jet transport parameter that controls medium modification is proportional to the initial parton density, and the coefficient is fixed by data on the suppression of large-p{sub T} hadron spectra obtained at the BNL Relativistic Heavy Ion Collider. Data on charged hadron multiplicity dN{sub ch}/d{eta}=1584{+-}80 in central Pb+Pb collisions from the ALICE experiment at the CERN Large Hadron Collider are used to constrain the initial parton density both for determining the jet transport parameter and the 3 + 1 dimensional (3 + 1D) ideal hydrodynamic evolution of the bulk matter that is employed for the calculation of R{sub PbPb}(p{sub T}) for neutral pions.},
doi = {10.1103/PHYSREVC.84.034902},
journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 3,
volume = 84,
place = {United States},
year = {2011},
month = {9}
}