The nonmesonic weak decay of the hypertriton

Details The nonmesonic weak decay of the hypertriton The nonmesonic weak decay of the hypertriton

1996-12-30

arxiv.org/abs/nucl-th/9612065v1

Phys.Rev.C55:2196-2213,1997; Erratum-ibid.C56:2892-2892,1997

Physics

Nuclear Physics

Nuclear Theory

27 pages, 20 figures, revtex, submitted to Phys. Rev. C

Scientific paper

10.1103/PhysRevC.55.2196

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 $\Lambda N \to N N $ transition is considered. The total nonmesonic decay rate is found to be 0.5% 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.

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