Effect of deformation on two-neutrino double beta decay matrix elements

Details Effect of deformation on two-neutrino double beta decay matrix elements Effect of deformation on two-neutrino double beta decay matrix elements

2006-04-17

arxiv.org/abs/nucl-th/0604036v1

Prog.Part.Nucl.Phys. 57 (2006) 251-253

Physics

Nuclear Physics

Nuclear Theory

Scientific paper

10.1016/j.ppnp.2005.10.003

We study the effect of deformation on the two-neutrino double beta decay for ground state to ground state transitions in all the nuclei whose half-lives have been measured. Our theoretical framework is a deformed QRPA based in Woods-Saxon or Hartree-Fock mean fields. We are able to reproduce at the same time the main characteristics of the two single beta branches, as well as the double beta matrix elements. We find a suppression of the double beta matrix element with respect to the spherical case when the parent and daughter nuclei have different deformations.

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