- th / 9 90 20 23 v 1 9 F eb 1 99 9 Weak decays of medium and heavy Λ - hypernuclei

نویسندگان

  • W. M. Alberico
  • A. De Pace
  • A. Ramos
چکیده

We have made a new evaluation of the Λ decay width in nuclear matter within the Propagator Method. Through the Local Density Approximation it is possible to obtain results in finite nuclei. We have also studied the dependence of the widths on the N N and ΛN short range correlations. Using reasonable values for the parameters that control these correlations, as well as realistic nuclear densities and Λ wave functions, we reproduce, for the first time, the experimental non-mesonic widths in a wide range of mass numbers (from medium to heavy hypernuclei).

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تاریخ انتشار 2008