Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2005-04-22
Phys.Rev. C71 (2005) 054907
Physics
Nuclear Physics
Nuclear Theory
19 pages, 8 figures, accepted by Phys. Rev. C
Scientific paper
10.1103/PhysRevC.71.054907
Based on the UrQMD model, we have investigated the influence of the symmetry potential on the negatively and positively charged $\pi$ and $\Sigma$ hyperon production ratios in heavy ion collisions at the SIS energies. We find that, in addition to $\pi^-/\pi^+$ ratio, the $\Sigma^-/\Sigma^+$ ratio can be taken as a sensitive probe for investigating the density dependence of the symmetry potential of nuclear matter at high densities (1-4 times of normal baryon density). This sensitivity of the symmetry potential to both the $\pi^-/\pi^+$ and $\Sigma^-/\Sigma^+$ ratios is found to depend strongly on the incident beam energy. Furthermore, the $\Sigma^-/\Sigma^+$ ratio is shown to carry the information about the isospin-dependent part of the $\Sigma$ hyperon single-particle potential.
Gupta Raj K.
Li Qingfeng
Li Zhuxia
Zhao Enguang
No associations
LandOfFree
$Σ^-/Σ^+$ ratio as a candidate for probing the density dependence of the symmetry potential at high nuclear densities does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with $Σ^-/Σ^+$ ratio as a candidate for probing the density dependence of the symmetry potential at high nuclear densities, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and $Σ^-/Σ^+$ ratio as a candidate for probing the density dependence of the symmetry potential at high nuclear densities will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-611630