scholarly journals Probing high-density behavior of symmetry energy from pion emission in heavy-ion collisions

2010 ◽  
Vol 683 (2-3) ◽  
pp. 140-144 ◽  
Author(s):  
Zhao-Qing Feng ◽  
Gen-Ming Jin
Keyword(s):  
Symmetry Energy ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
High Density ◽  
Ion Collisions ◽  
Pion Emission ◽  
Density Behavior

scholarly journals The high-density symmetry energy in heavy ion collisions

2009 ◽  
Vol 62 (2) ◽  
pp. 402-406 ◽  
Author(s):  
H.H. Wolter ◽  
V. Prassa ◽  
G. Lalazissis ◽  
T. Gaitanos ◽  
G. Ferini ◽  
...  
Keyword(s):  
Symmetry Energy ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
High Density ◽  
Ion Collisions

PROBING THE SYMMETRY ENERGY AT SUPRA-SATURATION DENSITIES FROM PION EMISSION IN HEAVY-ION COLLISIONS

2010 ◽  
Vol 19 (08n09) ◽  
pp. 1686-1693 ◽  
Author(s):  
ZHAO-QING FENG ◽  
GEN-MING JIN
Keyword(s):  
Symmetry Energy ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Measured Data ◽  
Quantum Molecular Dynamics ◽  
Nuclear Symmetry Energy ◽  
Potential Term ◽  
Ion Collisions ◽  
Pion Emission ◽  
Fopi Collaboration

Within the framework of the improved isospin dependent quantum molecular dynamics (ImIQMD) model, the emission of pion in heavy-ion collisions in the region 1 A GeV as a probe of nuclear symmetry energy at supra-saturation densities is investigated systematically, in which the pion is considered to be mainly produced by the decay of resonances Δ(1232) and N *(1440). The π-/π+ yields are calculated for selected Skyrme parameters SkP, SLy6, Ska and SIII, and also for the cases of different stiffness of symmetry energy with the parameter SLy6. Preliminary results compared with the measured data by the FOPI collaboration favor a hard symmetry energy of the potential term proportional to (ρ/ρ0)γs with γs = 2.

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