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

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arxiv nucl-th/0011036 v1 pith:DW5BRGVB submitted 2000-11-09 nucl-th

classification nucl-th
keywords lambdacorrelationsdecaymethodpropagatorrateswidthsapproximation
verification ladder T0 review T1 audit T2 compute T3 formal
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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.

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