Evolution of 4. pi. observables in the Vlasov-Uehling-Uhlenbeck theory and the transverse momentum transfer as a barometer for hadronic matter

Journal Article · Wed Jul 01 04:00:00 EDT 1987 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.36.220· OSTI ID:6137916

Molitoris, J J; Stoecker, H; Winer, B L

We study the dynamics of high energy heavy ion collisions through the Vlasov-Uehling-Uhlenbeck approach. Equilibration is observed, for central collisions. It is shown that the produced entropy, the pion multiplicity, flow angle, and transverse momentum distributions saturate at the moment of maximum compression and temperature. The effects of the nuclear equation of state and the Pauli principle are investigated. For the flow angle distribution there is a 20 deg reduction of the peak flow angle due to the Pauli principle. A stiff equation of state results in a 10--20 deg increase over the soft equation of state at all energies. The transverse momentum at projectile rapidity exhibits a peak structure as a function of impact parameter b. A 40% difference between soft and hard equation of state is observed for the peak impact parameter, i.e., for intermediate multiplicities.

• Research Organization: Institut fuer Theoretische Physik, J.W. Goethe Universitat, D-6000 Frankfurt am Main, Federal Republic of Germany
• OSTI ID: 6137916
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 36:1; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BINDING ENERGY
BOSONS
CHARGED-PARTICLE REACTIONS
ELEMENTARY PARTICLES
ENERGY
ENTROPY
EQUATIONS
EQUATIONS OF STATE
HADRONS
HEAVY ION REACTIONS
IMPACT PARAMETER
MATHEMATICAL SPACE
MATTER
MESONS
MOMENTUM TRANSFER
MULTIPLICITY
NUCLEAR MATTER
NUCLEAR REACTIONS
NUCLEON-NUCLEON POTENTIAL
PARTICLE PROPERTIES
PARTICLE RAPIDITY
PAULI PRINCIPLE
PHASE SPACE
PHYSICAL PROPERTIES
PIONS
POTENTIALS
PSEUDOSCALAR MESONS
SKYRME POTENTIAL
SPACE
THERMODYNAMIC PROPERTIES