Collisions of relativistic nucleons with nuclei and equation of state for superdense matter

Journal Article · Sat Oct 01 00:00:00 EDT 1977 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:6670458

Tarasov, Y A

Multiparticle production in collisions of relativistic nucleons with nuclei is treated by the hydrodynamical ''tube'' model. The problem is solved for arbitrary sound velocities. The calculation shows that the peak of the angular distribution of secondary particles in the c.m.s. is shifted toward angles >90 deg, i.e., the number of particles in the fragmentation region of the target nucleus increases considerably. This shift depends on the ''tube'' length and on the sound velocity in the compressed matter. A similar asymmetry is detected experimentally in collisions of 200-GeV nucleons with emulsion and hydrogen nuclei (Batavia, USA). The sound velocity in the superdense matter (of density about 100 nuclear densities) is estimated by comparing the experimental and theoretical values of these shifts. The best estimate for the sound velocity is between 0.6 and 0.7, corresponding to an equation of state somewhat stiffer than in the asymptotically free case or in the case of a baryon ensemble with a power law density of resonance states.

• Research Organization: I. V. Kurchatov Institute of Atomic Energy
• OSTI ID: 6670458
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Vol. 26:4
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
HYDRODYNAMIC MODEL
NUCLEON REACTIONS
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SOUND WAVES
MULTIPLE PRODUCTION
ANGULAR DISTRIBUTION
LIMITING FRAGMENTATION
RELATIVISTIC RANGE
BARYON REACTIONS
DISTRIBUTION
ENERGY RANGE
EQUATIONS
HADRON REACTIONS
HYPOTHESIS
INTERACTIONS
MATHEMATICAL MODELS
MATTER
NUCLEAR REACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
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THERMODYNAMIC MODEL
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