Modified fragmentation function and jet quenching at RHIC

Conference · Sat Jun 02 00:00:00 EDT 2001

OSTI ID:799666

Wang, Xin-Nian

Medium modification of jet fragmentation functions and parton energy loss in cold and hot matter are reviewed. The predicted nuclear modification of the jet fragmentation function agrees well with the recent HERMES data with a resultant energy loss dE/dx {approx} 0.5 GeV/fm. From the recent PHENIX data of high p{sub T} pi{sub 0} spectra in central Au+Au collisions at {radical}s=130 GeV, one extracts an energy loss for a 10 GeV parton that is equivalent to dE/dx=7.3 GeV/fm in a static medium with the same gluon density as in the initial stage of the collision at tau{sub 0}=0.2 fm/c. Constraints on jet quenching by the central rapidity density of charged hadrons is also discussed.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Director, Office of Science. Office of High Energy and Nuclear Physics (US)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 799666
• Report Number(s): LBNL-51282; R&D Project: NTCOST; B& R KB0301020; TRN: US0206132
• Resource Relation: Conference: International Conference on Statistical QCD, Bielefeld (DE), 08/26/2001--08/30/2001; Other Information: PBD: 2 Jun 2001
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
FRAGMENTATION
GLUONS
HADRONS
MODIFICATIONS
PARTONS
QUANTUM CHROMODYNAMICS
QUENCHING
SPECTRA