Parity-violating alpha-decay of the 3.56-MeV J,T=0+,1 state of Li-6

Details Parity-violating alpha-decay of the 3.56-MeV J,T=0+,1 state of Li-6 Parity-violating alpha-decay of the 3.56-MeV J,T=0+,1 state of Li-6

1995-11-15

arxiv.org/abs/nucl-th/9511020v1

Nucl.Phys. A601 (1996) 131-140

Physics

Nuclear Physics

Nuclear Theory

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Scientific paper

10.1016/0375-9474(96)00025-5

We study the parity-violating alpha+d decay of the lowest 0+ state of Li-6 in a microscopic three-cluster model. The initial bound and the final scattering states are described consistently within the same model. The parity-violating decay width is calculated in perturbation theory using the parity-nonconserving nucleon-nucleon interaction of Desplanques, Donoghue, and Holstein (DDH). We find that the decay width is sensitive to dynamical degrees of freedom which are beyond the alpha+p+n model, for example, alpha excitation and breakup. In our full model, which contains breathing excitations of the alpha particle and H-3 + He-3 rearrangement, the parity-nonconserving decay width is Gamma=3.97x10^{-9} eV, using the DDH coupling constants.

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