$Ξ$-nucleus potential and $(K^-,K^+)$ inclusive spectrum at $Ξ^-$ production threshold region

Details $Ξ$-nucleus potential and $(K^-,K^+)$ inclusive spectrum at $Ξ^-$ production threshold region $Ξ$-nucleus potential and $(K^-,K^+)$ inclusive spectrum at $Ξ^-$ production threshold region

2009-09-08

arxiv.org/abs/0909.1385v1

Prog.Theor.Phys.123:157-167,2010

Physics

Nuclear Physics

Nuclear Theory

10 pages including 5 figures

Scientific paper

10.1143/PTP.123.157

The $(K^-,K^+)$ $\Xi^-$ production inclusive spectrum is reinvestigated in view of the very weak $\Xi$-nucleus potential predicted by microscopic calculations with the SU$_6$ quark-model baryon-baryon interaction. The inclusive spectrum is evaluated by the semiclassical distorted wave (SCDW) method. The explicit comparison of the strength function with that of the Green-function method demonstrates the quantitative reliability of the SCDW approximation. It is presumed that the presently available data at the $\Xi$ production threshold region does not necessarily imply the attractive strength of about 15 MeV for the $\Xi$-nucleus potential in a conventional Woods-Saxon form. Instead, an almost zero potential is preferable.

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