Evidence for Hot, Bulk QCD Matter and Quenching of Jets at RHIC

Journal Article · Tue Mar 22 00:00:00 EST 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1896694· OSTI ID:20630719

Harris, John W ^[1]

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1. Physics Department, Yale University, P.O. Box 208124, 272 Whitney Avenue, New Haven CT, 06520-8124 (United States)

Results from the Relativistic Heavy Ion Collider (RHIC) depict formation of a hot, dense system at an energy density greater than 5 GeV/fm3, well above that where hadrons exist. The measured relative particle abundances are reproduced by statistical-thermal models with a temperature and baryo-chemical potential at the quark-hadron phase boundary predicted by lattice QCD. A large amount of collective flow is observed in collisions at RHIC and provides evidence of strong pressure gradients very early in the collision, at a time when the system is dense and highly interacting. Hard-scattering, suppression of large transverse momentum hadrons, and quenching of di-jets are observed in central Au + Au collisions but not in d + Au collisions, providing evidence for extreme energy loss of partons attempting to propagate through the hot, dense matter at RHIC.

• OSTI ID: 20630719
• Journal Information: AIP Conference Proceedings, Vol. 753, Issue 1; Conference: HCP2004: 15. topical conference on hadron collider physics, East Lansing, MI (United States), 14-18 Jun 2004; Other Information: DOI: 10.1063/1.1896694; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BROOKHAVEN RHIC
COLLIDING BEAMS
DEUTERON REACTIONS
ENERGY DENSITY
ENERGY LOSSES
GEV RANGE
GOLD 197 REACTIONS
GOLD 197 TARGET
HADRONS
JET MODEL
LATTICE FIELD THEORY
PARTONS
POTENTIALS
PRESSURE GRADIENTS
QUANTUM CHROMODYNAMICS
QUARK-HADRON INTERACTIONS
QUARKS
TRANSVERSE MOMENTUM