Diagnosing Energy Loss: PHENIX Results on High-p_T Hadron Spectra

Conference · Mon Jan 01 00:00:00 EST 2007

OSTI ID:931214

Sahlmueller, B. ^[1]; Awes, Terry C ^[2]; Batsouli, Sotiria ^[3]; Cianciolo, Vince ^[2]; Efremenko, Yuri ^[3]; Read, Jr, Kenneth F ^[2]; Silvermyr, David O ^[2]; Sorensen, Soren P ^[4]; Stankus, Paul W ^[2]; Young, Glenn R ^[2]; Zhang, Chun ^[3]

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1. University of Munster, Germany
2. ORNL
3. University of Tennessee, Knoxville (UTK) & Oak Ridge National Laboratory (ORNL)
4. University of Tennessee, Knoxville (UTK)

Measurements of inclusive spectra of hadrons at large transverse momentum over a broad range of energy in different collision systems have been performed with the PHENIX experiment at RHIC. The data allow us to study the energy and system size dependence of the suppression observed in R{sub AA} of high-p{sub T} hadrons at {radical}s{sub NN} = 200 GeV. Due to the large energy range from {radical}s{sub NN} = 22 GeV to 200 GeV, the results can be compared to results from CERN SPS at a similar energy. The large Au+Au dataset from the 2004 run of RHIC also allows us to constrain theoretical models that describe the hot and dense matter produced in such collisions. Investigation of particle ratios such as {eta}/{pi}{sup 0} helps in understanding the mechanisms of energy loss.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 931214
• 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

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CERN
ENERGY RANGE
HADRONS
QUARK MATTER
SPECTRA
TRANSVERSE MOMENTUM
COLLISIONS