Nuclear Structure in Nonmesonic Weak Decay of Hypernuclei

Details Nuclear Structure in Nonmesonic Weak Decay of Hypernuclei Nuclear Structure in Nonmesonic Weak Decay of Hypernuclei

2002-12-06

arxiv.org/abs/nucl-th/0212040v1

Braz.J.Phys. 33 (2003) 187-194

Physics

Nuclear Physics

Nuclear Theory

18 pages, 4 figures, Proceedings of XXV RTFNB (Sept. 2002), Brazil

Scientific paper

A general shell model formalism for the nonmesonic weak decay of the hypernuclei has been developed.It involves a partial wave expansion of the emitted nucleon waves,preserves naturally the antisymmetrization between the escaping particles and the residual core, and contains as a particular case the weak Lambda-core coupling formalism. The hypernuclei are grouped having in view their A-1 cores, that is in those with even-even, even-odd and odd-odd cores.It is shown that in all three cases the nuclear structure manifests itself basically through Pauli Principle, and very simple expressions are derived for the neutron and proton induced decays rates, which does not involve the spectroscopic factors.

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