Tracing isospin with the {pi}{sup -}/{pi}{sup +} ratio in central heavy ion collisions
Journal Article
·
· Physical Review. C, Nuclear Physics
- Department of Physics, Tsinghua University, Beijing 100084 (China)
Within an isospin- and momentum-dependent hadronic transport model, we have investigated the isospin mixing with the probe of the {pi}{sup -}/{pi}{sup +} ratio in central isospin asymmetric {sup 96}Ru+{sup 96}Zr collision at an incident energy of 400 MeV/u. The isospin equilibrium is not reached according to the asymmetrical distribution of the {pi}{sup -}/{pi}{sup +} ratio with rapidity. In comparison with the nucleon observable, it suggests that the pion ratio {pi}{sup -}/{pi}{sup +} is a promising observable to probe the relaxation of isospin degree of freedom in central heavy ion collisions without being strongly affected by the surface effect. Because of the small system size and rather strong effect of rescattering on pions, the isospin mixing shows insignificant dependence on the stiffness of the symmetry energy in the relevant colliding system.
- OSTI ID:
- 21419612
- Journal Information:
- Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 4 Vol. 82; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ASYMMETRY
ATOM COLLISIONS
ATOM-ATOM COLLISIONS
BARYONS
BOSONS
COLLISIONS
DEGREES OF FREEDOM
ELEMENTARY PARTICLES
ENERGY RANGE
EVEN-EVEN NUCLEI
FERMIONS
HADRONS
HEAVY ION REACTIONS
INTERMEDIATE MASS NUCLEI
ISOSPIN
ISOTOPES
MESONS
MEV RANGE
MEV RANGE 100-1000
MIXING
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
PARTICLE PROPERTIES
PARTICLE RAPIDITY
PIONS
PIONS MINUS
PIONS PLUS
PSEUDOSCALAR MESONS
RELAXATION
RESCATTERING
RUTHENIUM 96
RUTHENIUM ISOTOPES
SCATTERING
STABLE ISOTOPES
SURFACES
SYMMETRY
TRANSPORT THEORY
ZIRCONIUM 96
ZIRCONIUM ISOTOPES
ASYMMETRY
ATOM COLLISIONS
ATOM-ATOM COLLISIONS
BARYONS
BOSONS
COLLISIONS
DEGREES OF FREEDOM
ELEMENTARY PARTICLES
ENERGY RANGE
EVEN-EVEN NUCLEI
FERMIONS
HADRONS
HEAVY ION REACTIONS
INTERMEDIATE MASS NUCLEI
ISOSPIN
ISOTOPES
MESONS
MEV RANGE
MEV RANGE 100-1000
MIXING
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
PARTICLE PROPERTIES
PARTICLE RAPIDITY
PIONS
PIONS MINUS
PIONS PLUS
PSEUDOSCALAR MESONS
RELAXATION
RESCATTERING
RUTHENIUM 96
RUTHENIUM ISOTOPES
SCATTERING
STABLE ISOTOPES
SURFACES
SYMMETRY
TRANSPORT THEORY
ZIRCONIUM 96
ZIRCONIUM ISOTOPES