Baryon distribution in relativistic heavy-ion collisions

Conference · Sun Jan 01 04:00:00 EST 1984

OSTI ID:5004156

Wong, C Y

Recently there has been considerable interest in highly relativistic heavy-ion collisions which was suggested as a way to produce a phase transition from the ordinary confined matter to the unconfined quark-gluon plasma. As the fraction of baryons in the early universe was small, it seems desirable to design a heavy-ion collider such that when the energy density in the central rapidity is high enough for a phase transition, there is no net baryon density there. Recent investigations reveal that the average downward shift of the projectile baryon rapidity is quite large. The formation of a pure quark-gluon plasma depends on the shape of the baryon momentum distributions. It is of interest to estimate the baryon momentum distribution. We shall study the baryon distribution using the Glauber-type multiple collision model. In this model, a nucleon in one nucleus makes many inelastic collisions with nucleons in the other nucleus, the probability being given by the thickness function and the total nucleon-nucleon inelastic cross section. Each baryon-baryon collision results in a degradation of their energies and momenta in accordance with experimental nucleon-nucleon inelastic differential cross section data. This model is an extension of the model of Blankenbecler et al. to include the effect of energy degradation. We shall focus our attention on the longitudinal momentum distribution in terms of the Feynman scaling variable x.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5004156
• Report Number(s): CONF-8403101-1; ON: DE84008509
• Country of Publication: United States
• Language: English

Related Subjects

653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYONS
CHARGED-PARTICLE REACTIONS
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GLAUBER THEORY
HADRONS
HEAVY ION REACTIONS
MATHEMATICAL MODELS
MATTER
MULTIPLE SCATTERING
NUCLEAR MODELS
NUCLEAR REACTIONS
PARTICLE PROPERTIES
PARTICLE RAPIDITY
QUARK MATTER
RELATIVISTIC RANGE
SCATTERING
SPATIAL DISTRIBUTION