Decay rates of medium-heavy Lambda-hypernuclei within the Propagator Method

Abstract

The Lambda decay rates in nuclei has been calculated in ref. 1 using the Propagator Method in Local Density Approximation. We have studied the dependence of the widths (including the one for the two-body induced process Lambda NN -> NNN) on the N-N and Lambda-N short range correlations. Using a reasonable parametrization of these correlations, as well as realistic nuclear densities and Lambda wave functions, we reproduce, for the first time, the experimental non-mesonic widths from medium to heavy hypernuclei.

Comments: 8 pages, 1 figure. Talk given at the APCTP Workshop Strangeness Nuclear Physics, Seoul National University, Seoul, Korea, 19-22 February 1999