Three-body collisions in Boltzmann-Uehling-Uhlenbeck theory

Journal Article · Mon Oct 15 00:00:00 EDT 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.76.044909· OSTI ID:21067834

Larionov, A B ^[1]; Buss, O; Gallmeister, K; Mosel, U ^[1]

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1. Institut fuer Theoretische Physik, Universitaet Giessen, D-35392 Giessen (Germany)

Aiming at a microscopic description of heavy ion collisions in the beam energy region of about 10A GeV, we extend the Giessen Boltzmann-Uehling-Uhlenbeck (GiBUU) transport model by including a relativistic mean field, in-medium baryon-baryon cross sections, and three-body collisions. The model is then compared with experimental data for central Au+Au collisions at 2A-10A GeV and central Pb+Pb collisions at 30A and 40A GeV on the proton rapidity spectra, the midrapidity yields of {pi}{sup +},K{sup {+-}}, and ({lambda}+{sigma}{sup 0}), and the transverse mass spectra of {pi}{sup {+-}} and K{sup {+-}}. The three-body collisions increase the inverse slope parameters of the hadron m{sub perpendicular} spectra to good agreement with the data.

• OSTI ID: 21067834
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 76, Issue 4; Other Information: DOI: 10.1103/PhysRevC.76.044909; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COLLIDING BEAMS
CROSS SECTIONS
GEV RANGE
GOLD 197 REACTIONS
GOLD 197 TARGET
LAMBDA BARYONS
LEAD 208 REACTIONS
LEAD 208 TARGET
MASS SPECTRA
MEAN-FIELD THEORY
PARTICLE RAPIDITY
PIONS PLUS
PROTONS
RELATIVISTIC RANGE
SIGMA NEUTRAL PARTICLES
THREE-BODY PROBLEM
TRANSPORT THEORY