Published September 2002
| Version v1
Journal article
Off-shell pions in Boltzmann-Uehling-Uhlenbeck transport theory
Creators
- 1. Institut fuer Theoretische Physik, Universitaet Giessen, D-35392 Giessen (Germany)
Description
Due to large πN→Δ cross section a pion acquires a large width in nuclear matter. Therefore, a Δ resonance decaying in the nuclear medium can produce far off-shell pions, which will gradually lose their virtuality while propagating to the vacuum. To describe such off-shell dynamics, we implemented a pion spectral function for finite nuclear matter density--calculated on the basis of the Δ-hole model--in the Boltzmann-Uehling-Uhlenbeck transport approach. The pion off-shell dynamics leads to an enhancement of the low-pt pion yields in the collisions of Au+Au at 1A GeV
Additional details
Identifiers
- DOI
- 10.1103/PhysRevC.66.034902;
- arXiv
- arXiv:nucl-th/0202008v3;
Publishing Information
- Journal Title
- Physical Review. C, Nuclear Physics
- Journal Volume
- 66
- Journal Issue
- 3
- Journal Page Range
- p. 034902-034902.9
- ISSN
- 0556-2813
- CODEN
- PRVCAN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 36012615
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- CROSS SECTIONS; DELTA BARYONS; GEV RANGE; GOLD 197 REACTIONS; GOLD 197 TARGET; NUCLEAR MATTER; PARTICLE PRODUCTION; PIONS; SPECTRAL FUNCTIONS; STATISTICAL MODELS; TRANSPORT THEORY
- Descriptors DEC
- BARYONS; BOSONS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; FUNCTIONS; HADRONS; HEAVY ION REACTIONS; MATHEMATICAL MODELS; MATTER; MESONS; N*BARYONS; NUCLEAR REACTIONS; PSEUDOSCALAR MESONS; TARGETS
Optional Information
- Notes
- (c) 2002 The American Physical Society