Evolution of 4. pi. observables in the Vlasov-Uehling-Uhlenbeck theory and the transverse momentum transfer as a barometer for hadronic matter
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), Vol. 36:1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
HEAVY ION REACTIONS
ENTROPY
EQUATIONS OF STATE
BINDING ENERGY
HADRONS
IMPACT PARAMETER
MOMENTUM TRANSFER
MULTIPLICITY
NUCLEAR MATTER
PARTICLE RAPIDITY
PAULI PRINCIPLE
PHASE SPACE
PIONS
SKYRME POTENTIAL
BOSONS
CHARGED-PARTICLE REACTIONS
ELEMENTARY PARTICLES
ENERGY
EQUATIONS
MATHEMATICAL SPACE
MATTER
MESONS
NUCLEAR REACTIONS
NUCLEON-NUCLEON POTENTIAL
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
POTENTIALS
PSEUDOSCALAR MESONS
SPACE
THERMODYNAMIC PROPERTIES
653003* - Nuclear Theory- Nuclear Reactions & Scattering