Jet Quenching in the Direction Opposite to a Tagged Photon in High-Energy Heavy-Ion Collisions

Journal Article · Mon Jul 01 04:00:00 EDT 1996 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.77.231· OSTI ID:286388

Wang, X ^[1]; Huang, Z; Sarcevic, I ^[2]

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1. Nuclear Science Division, Lawrence Berkeley Laboratory, MS 70A-3307, Berkeley, California 94720 (United States)
2. Department of Physics, University of Arizona, Tucson, Arizona 85721 (United States)

We point out that events associated with large {ital E}{sub {ital T}} direct photons in high-energy heavy-ion collisions can be used to study jet energy loss in dense matter. In such events, the {ital p}{sub {ital T}} spectrum of charged hadrons from jet fragmentation in the direction opposite to the tagged photon is estimated to be well above the background which can be reliably subtracted at moderately large {ital p}{sub {ital T}}. We demonstrate that comparison between the extracted fragmentation function in {ital AA} and {ital pp} collisions can be used to determine the jet energy loss and the interaction mean free path in the dense matter produced in high-energy heavy-ion collisions. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: Lawrence Berkeley National Laboratory
• DOE Contract Number: AC03-76SF00098; FG03-93ER40792
• OSTI ID: 286388
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 2 Vol. 77; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ENERGY LOSSES
FRAGMENTATION
HEAVY ION REACTIONS
JETS
MATTER
PHOTONS
PROTON-PROTON INTERACTIONS
QUENCHING
TRANSVERSE ENERGY
TRANSVERSE MOMENTUM