Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10723923 | Physics Letters B | 2011 | 5 Pages |
Abstract
1sÎ hypernuclear formation rates in stopped Kâ reactions on several p-shell targets are derived from hypernuclear formation spectra measured recently by the FINUDA Collaboration and are compared with calculated 1sÎ formation rates based on a chirally motivated coupled channel model. The calculated rates are about 15% of the derived rates, and in contrast with previous calculations depend weakly on the depth of the threshold Kâ nuclear potential. The A dependence of the calculated 1sÎ rates is in fair agreement with that of the derived 1sÎ rates, showing a slight preference for a deep density dependent potential, ReVKâ(Ï0)â¼â(150-200) MeV, over a shallow potential, ReVKâ(Ï0)â¼â50 MeV. These new features originate from a substantial energy and density dependence found for the in-medium subthreshold KânâÏâÎ branching ratio that enters the hypernuclear formation rate calculations.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
A. Cieplý, E. Friedman, A. Gal, V. KrejÄiÅÃk,