Non-Abelian feature of parton energy loss in energy dependence of jet quenching in high-energy heavy-ion collisions

Journal Article · Sat Jan 01 00:00:00 EST 2005 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.71.014903· OSTI ID:20695897

Qun, Wang ^[1]; Xinnian, Wang ^[2]

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1. Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China)
2. Nuclear Science Division, MS70R0319, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 (United States)

One of the non-Abelian features of parton energy loss is the ratio {delta}E{sub g}/{delta}E{sub q}=9/4 between gluon and quark jets. Since jet production rate is dominated by quark jets at high x{sub T}=2p{sub T}/{radical}(s) and by gluon jets at low x{sub T}, high p{sub T} hadron suppression in high-energy heavy-ion collisions should reflect such a non-Abelian feature. Within a leading-order perturbative QCD parton model that incorporates transverse expansion and Woods-Saxon nuclear distribution, the energy dependence of large p{sub T}{approx}5-20 GeV/c hadron suppression is found to be sensitive to the non-Abelian feature of parton energy loss and could be tested by data from low-energy runs at Brookhaven National Laboratory's relativistic heavy-ion collider or data from the large hadron collider.

• OSTI ID: 20695897
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 71, Issue 1; Other Information: DOI: 10.1103/PhysRevC.71.014903; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BROOKHAVEN RHIC
CERN LHC
ENERGY DEPENDENCE
ENERGY LOSSES
GEV RANGE
GLUONS
HADRONS
HEAVY ION REACTIONS
JET MODEL
PARTON MODEL
PARTONS
QUANTUM CHROMODYNAMICS
QUARKS
TRANSVERSE MOMENTUM
WOODS-SAXON POTENTIAL