Parton energy loss in heavy-ion collisions via direct-photon and charged-particle azimuthal correlations
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Abelev-2010-Parton energy loss i.pdf
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Author(s)
Balewski, Jan T.
Betancourt, Michael Joseph
Corliss, Ross Cameron
Jones, Christopher LaDon
Kocoloski, Adam Philip
Leight, William Axel
Sakuma, Tai
Surrow, Bernd
Hoffman, Alan Michael
Milner, Richard G
Date Issued
December 2010
Journal
Physical Review C
Publisher
American Physical Society
Citation
STAR Collaboration et al. “Parton energy loss in heavy-ion collisions via direct-photon and charged-particle azimuthal correlations.” Physical Review C 82.3 (2010): 034909. © 2010 The American Physical Society.
Version
Final published version
Abstract
Charged-particle spectra associated with direct photon (γdir) and pi0 are measured in p+p and Au+Au collisions at center-of-mass energy [sqrt]sNN=200 GeV with the STAR detector at the Relativistic Heavy Ion Collider. A shower-shape analysis is used to partially discriminate between γdir and pi0. Assuming no associated charged particles in the γdir direction (near side) and small contribution from fragmentation photons (γfrag), the associated charged-particle yields opposite to γdir (away side) are extracted. In central Au+Au collisions, the charged-particle yields at midrapidity (|η|<1) and high transverse momentum (3
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevC.82.034909
