Flow in conical shock waves: A signal for the deconfinement transition

Journal Article · Mon Oct 01 04:00:00 EDT 1990 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.42.2283· OSTI ID:6226694

Rischke, D H; Stoecker, H; Greiner, W ^[1]

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1. Institut fuer Theoretische Physik der J. W. Goethe Universitaet, Postfach 111932, D-6000 Frankfurt am Main 11 (Federal Republic of Germany)

We investigate the hydrodynamical flow of nuclear matter in a conical-shock-wave scenario of a central, asymmetric heavy-ion collision. This work is motivated by a suggestion of Chapline and Granik that the creation of a deconfined phase of quarks and gluons behind the shock will appreciably increase the deflection angle of the matter flow. We employ several hadron matter equations of state recently suggested to solve the conical-shock-wave problem and compare the results with a calculation using the bag equation of state. We find that large differences in the deflection angle obtained in the rest frame of the shock vanish in the laboratory system. However, a signature for the deconfinement transition may be the transverse momentum of the matter flow, which is up to a factor of 2 larger for the quark-gluon plasma. Thus, an excitation function of the mean transverse momentum would show an increase at a certain bombarding energy, signaling the onset of the deconfinement transition.

• OSTI ID: 6226694
• Journal Information: Physical Review, D (Particles Fields); (USA), Journal Name: Physical Review, D (Particles Fields); (USA) Vol. 42:7; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

653002* -- Nuclear Theory-- Nuclear Matter
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BOSONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
ELEMENTARY PARTICLES
EQUATIONS
EQUATIONS OF STATE
EXCITATION FUNCTIONS
FERMIONS
FIELD THEORIES
FUNCTIONS
GLUONS
HEAVY ION REACTIONS
HYDRODYNAMIC MODEL
LINEAR MOMENTUM
MATHEMATICAL MODELS
MATTER
NUCLEAR MATTER
NUCLEAR REACTIONS
PARTICLE MODELS
POSTULATED PARTICLES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MATTER
QUARKS
SHOCK WAVES
STATISTICAL MODELS
THERMODYNAMIC MODEL
TRANSVERSE MOMENTUM