Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2005-12-19
Europhys.Lett.75:36-41,2006
Physics
Nuclear Physics
Nuclear Theory
5 figures, 6 pages
Scientific paper
10.1209/epl/i2006-10083-y
The $\Lambda$- and $\Xi^-$-hyperon mean free paths in nuclei are firstly calculated in the relativistic mean field (RMF) theory. The real parts of the optical potential are derived from the RMF approach, while the imaginary parts are obtained from those of nucleons with the relations: $U^{\mathrm{IY}}_{\mathrm{S}} = \alpha_{\sigma \mathrm{Y}}\cdot U_{\mathrm{S}}^{\mathrm{IN}}$ and $U^{\mathrm{IY}}_{\mathrm{V}} = \alpha_{\omega \mathrm{Y}}\cdot U_{\mathrm{V}}^{\mathrm{IN}}$ . With the assumption, the depth of the imaginary potential for $\Xi^-$ is $W_{\Xi}\simeq-$ 3.5 MeV, and for $\Lambda$ is $W_{\Lambda}\simeq-$ 7 MeV at low incident energy. We find that, the hyperon mean free path decreases with the increase of the hyperon incident energies, from 200 MeV to 800 MeV; and in the interior of the nuclei, the mean free path is about $2\sim 3$ fm for $\Lambda$, and about $4\sim 8$ fm for $\Xi^-$, depending on the hyperon incident energy.
Dang Long
Ning Ping-Zhi
Wang Qing Li
Zhong Xian-Hui
No associations
LandOfFree
The hyperon mean free paths in the relativistic mean field 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 The hyperon mean free paths in the relativistic mean field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The hyperon mean free paths in the relativistic mean field will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-281626