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Title: Systematic Study of High-p T Direct Photon Production with the PHENIX Experiment at RHIC

Abstract

When studying the initial state and evolution of the matter created in relativistic heavy ion collisions, high-p{sub T} direct photons are a powerful probe. They are created in initial hard processes and in parton fragmentation, and possibly in interactions of partons with the hot and dense medium. We present systematic measurements of high-p{sub T} direct photon production in {radical}s{sub NN} = 200 ; GeV p+p and Au+Au collisions. The nuclear modification factor of direct photons is shown for 5 < p{sub T} < 18 GeV/c, and at very high transverse momenta it seems to be below unity in the most central Au+Au collisions.

Authors:
 [1];  [2];  [3];  [2];  [3];  [2];  [2];  [4];  [2];  [2];  [3];  [5]
  1. University of Tokyo, Tokyo, Japan
  2. ORNL
  3. University of Tennessee, Knoxville (UTK) & Oak Ridge National Laboratory (ORNL)
  4. University of Tennessee, Knoxville (UTK)
  5. The
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
931216
DOE Contract Number:
DE-AC05-00OR22725
Resource Type:
Conference
Resource Relation:
Conference: 19th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions: Quark Matter 2006, Shanghai, China, 20061114, 20061120
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 74 ATOMIC AND MOLECULAR PHYSICS; FRAGMENTATION; HEAVY IONS; MODIFICATIONS; PHOTONS; PRODUCTION; QUARK MATTER; COLLISIONS; TRANSVERSE MOMENTUM

Citation Formats

Isobe, T., Awes, Terry C, Batsouli, Sotiria, Cianciolo, Vince, Efremenko, Yuri, Read Jr, Kenneth F, Silvermyr, David O, Sorensen, Soren P, Stankus, Paul W, Young, Glenn R, Zhang, Chun, and PHENIX, Collaboration. Systematic Study of High-pT Direct Photon Production with the PHENIX Experiment at RHIC. United States: N. p., 2007. Web.
Isobe, T., Awes, Terry C, Batsouli, Sotiria, Cianciolo, Vince, Efremenko, Yuri, Read Jr, Kenneth F, Silvermyr, David O, Sorensen, Soren P, Stankus, Paul W, Young, Glenn R, Zhang, Chun, & PHENIX, Collaboration. Systematic Study of High-pT Direct Photon Production with the PHENIX Experiment at RHIC. United States.
Isobe, T., Awes, Terry C, Batsouli, Sotiria, Cianciolo, Vince, Efremenko, Yuri, Read Jr, Kenneth F, Silvermyr, David O, Sorensen, Soren P, Stankus, Paul W, Young, Glenn R, Zhang, Chun, and PHENIX, Collaboration. Mon . "Systematic Study of High-pT Direct Photon Production with the PHENIX Experiment at RHIC". United States. doi:.
@article{osti_931216,
title = {Systematic Study of High-pT Direct Photon Production with the PHENIX Experiment at RHIC},
author = {Isobe, T. and Awes, Terry C and Batsouli, Sotiria and Cianciolo, Vince and Efremenko, Yuri and Read Jr, Kenneth F and Silvermyr, David O and Sorensen, Soren P and Stankus, Paul W and Young, Glenn R and Zhang, Chun and PHENIX, Collaboration},
abstractNote = {When studying the initial state and evolution of the matter created in relativistic heavy ion collisions, high-p{sub T} direct photons are a powerful probe. They are created in initial hard processes and in parton fragmentation, and possibly in interactions of partons with the hot and dense medium. We present systematic measurements of high-p{sub T} direct photon production in {radical}s{sub NN} = 200 ; GeV p+p and Au+Au collisions. The nuclear modification factor of direct photons is shown for 5 < p{sub T} < 18 GeV/c, and at very high transverse momenta it seems to be below unity in the most central Au+Au collisions.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}

Conference:
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