Effects of Jet Quenching on the Hydrodynamical Evolution of Quark-Gluon Plasma

Journal Article · Fri Aug 11 04:00:00 EDT 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.97.062301· OSTI ID:20860637

Chaudhuri, A K ^[1]; Heinz, Ulrich ^[2]

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1. Variable Energy Cyclotron Centre, 1-AF, Bidhan Nagar, Kolkata-700 064 (India)
2. Department of Physics, The Ohio State University, Columbus, Ohio 43210 (United States)

We study the effects of jet quenching on the hydrodynamical evolution of the quark-gluon plasma (QGP) fluid created in a heavy-ion collision. In jet quenching, a hard QCD parton, before fragmenting into a jet of hadrons, deposits a fraction of its energy in the medium, leading to suppressed production of high-p{sub T} hadrons. Assuming that the deposited energy quickly thermalizes, we simulate the subsequent hydrodynamic evolution of the QGP fluid. For partons moving at supersonic speed, v{sub p}>c{sub s}, and sufficiently large energy loss, a shock wave forms leading to conical flow. The PHENIX Collaboration recently suggested that observed structures in the azimuthal angle distribution might be caused by conical flow. We show here that, for phenomenologically acceptable values of parton energy loss, conical flow effects are too weak to explain these structures.

• OSTI ID: 20860637
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 6 Vol. 97; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
EVOLUTION
HADRONS
HEAVY ION REACTIONS
JETS
QUANTUM CHROMODYNAMICS
QUARK MATTER
QUENCHING
SHOCK WAVES