Decay of Single-and Double-Λ Hypernuclei

Author: Parreno A.   Ramos A.   Zarei M.   Bennhold C.  

Publisher: Akademiai Kiado

ISSN: 1219-7580

Source: Acta Physica Hungarica A, Vol.11, Iss.3-4, 2000-12, pp. : 397-408

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Abstract

Abstract. In this contribution we present a nonrelativistic transition poten- tia to describe the nonmesonic weak decay of Ë and ËË hypernuclei.This potentia is based on a one-meson-exchange (OME)model which includes,in addition to the ong-ranged pion,the exchange of the pseudoscalar ç,K and the vector ñ,ů,K .mesons.Realistic baryon –baryon (BB)potentia models for the S =0 , .1and .2 sectors are used in order to account for the strong BB interaction.Results obtainedfor di .erent Ë hypernuclei are comparedto the avai ab e experimenta data,including partial and tota decay rates as we as asymmetries in the angular distribution of the outgoing particles.