The hyperon mean free paths in the relativistic mean fieldQ. L. Wang, L. Dang, X. H. Zhong, C. Y. Song and P. Z. Ning
Department of Physics, Nankai University - Tianjin 300071, PRC
received 17 February 2006; accepted in final form 17 May 2006
published online 9 June 2006
The - and -hyperon mean free paths in finite nuclei are firstly calculated in the relativistic mean-field theory. The real optical potentials are derived from the RMF approach, while the imaginary parts are obtained from the assumptions: and . With these assumptions, the depth of the imaginary potential for is , and for is at low incident energy. We find that the hyperon MFP decreases with the increment of the incident energies of the hyperon (from to ); and in the nuclear interior, the MFP is about 2- for , and about 4- for , depending on the incident energy of the hyperon.
21.65.+f - Nuclear matter.
21.30.Fe - Forces in hadronic systems and effective interactions.
© EDP Sciences 2006