2026-04-13T02:39:37Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/122332025-12-05T16:43:31Zcom_2072_1057col_2072_478823col_2072_478917

00925njm 22002777a 4500 dc Bennhold, Cornelius author Ramos Gómez, Àngels author Aruliah, D. A. author Oelfke, U. author 2010-04-22T11:56:19Z 2010-04-22T11:56:19Z 1992 The nonmesonic decay of the hypertriton is calculated based on a hypertriton wave function and 3N scattering states, which are rigorous solutions of three-body Faddeev equations using realistic NN and hyperon-nucleon interactions. The pion exchange together with heavier meson exchanges for the {Lambda}N{r_arrow}NN transition is considered. The total nonmesonic decay rate is found to be 0.5{percent} of the free {Lambda} decay rate. Integrated as well as differential decay rates are given. The p- and n-induced decays are discussed thoroughly and it is shown that the corresponding total rates cannot be measured individually. The nonmesonic weak decay of 3 Λ H is evaluated microscopically in the pion exchange model. The correlated three-body wave function of the hypertriton is approximated by a bound Λ-deuteron system obtained by averaging the YN interaction over the deuteron wave function. The relevant matrix elements are calculated in momentum space. The resulting decay rate is 4.9% of the free Λ decay rate. Estructura nuclear Desintegració radioactiva Mesons (Física nuclear) Interaccions febles (Física nuclear) Nuclear structure Radioactive decay Mesons Weak interactions (Nuclear physics) Nonmesonic weak decay of the hypertriton