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The nonmesonic weak decay of the hypertriton

J. Golak, K. Miyagawa, H. Kamada, H. Witała, W. Glöckle, A. Parreño, A. Ramos, C. Bennhold

nucl-tharXiv:nucl-th/9612065

Abstract

The nonmesonic decay of the hypertriton is calculated based on a hypertriton wavefunction and 3N scattering states, which are rigorous solutions of 3-body Faddeev equations using realistic NN and hyperon-nucleon interactions. The pion-exchange together with heavier meson exchanges for the ΛN N N transition is considered. The total nonmesonic decay rate is found to be 0.5% of the free Λ 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.

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