Lambda-hypernuclear production in stopped (K-,pion) reactions reexamined

Details Lambda-hypernuclear production in stopped (K-,pion) reactions reexamined Lambda-hypernuclear production in stopped (K-,pion) reactions reexamined

2010-05-12

arxiv.org/abs/1005.2138v3

Phys. Rv. C 82, 024609 (2010) pp. 1-7

Physics

Nuclear Physics

Nuclear Theory

matches published version, including the dubious change of `revisited' in the title to `reexamined' upon PRC Editor's insisten

Scientific paper

DWIA calculations of Lambda-hypernuclear production rates in stopped K- reactions on several p-shell targets used recently in experiments by the FINUDA Collaboration are reported. Chirally motivated K- + N -> pion + Lambda in-medium transition amplitudes are employed and the sensitivity of the calculated rates to the initial K- atomic wavefunctions and final pion distorted waves is studied. The calculated rates are compared with measured rates, wherever available, confirming earlier observations that (i) the calculated rates are generally lower than the measured rates, and (ii) the deeper the K- nuclear potential, the worse is the discrepancy. The A dependence of the calculated 1s Lambda hypernuclear production rates is discussed for the first time, providing a useful tool in resolving the issue of depth of the K- nuclear potential near threshold.

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