Selection rules in the double beta decay of deformed nuclei

Abstract

The 2 nu double beta decay half-lives of six nuclei, whose decays were previously reported as theoretically forbidden, are calculated by including the pairing interaction, which mixes different occupations and opens up the possibility of the decay. All allowed channels for the 0 nu double beta decay are also computed. The estimated 2 nu double beta half-lives suggest that measurements in 244Pu may find positive signals, and that planned experiments would succeed in detecting the 2 nu double beta decay in 160Gd. Limits for the zero neutrino mode, in the analyzed deformed emitters, are predicted.

4 pages, 4 tables

References in corpus (5)

• Measurement of the rate of nu_e + d --> p + p + e^- interactions produced by 8B solar neutrinos at the Sudbury Neutrino Observatory
• Solar 8B and hep Neutrino Measurements from 1258 Days of Super-Kamiokande Data
• Quest for double beta decay of 160-Gd and Ce isotopes
• Test of Nuclear Wave Functions for Pseudospin Symmetry
• Inter-band B(E2) transition strengths in odd-mass heavy deformed nuclei

Cited by in corpus (6)

• Double Beta Decay
• Theoretical description of the double beta decay of 160Gd
• First direct search for $2\epsilon$ and $\epsilon {\beta }^{+}$ decay of ${}^{144}$Sm and $2{\beta }^{-}$ decay of ${}^{154}$Sm
• Search for rare alpha and double beta decays of Yb isotopes to excited levels of daughter nuclei
• Low energy 0+ excitations in 158Gd
• First limits on double beta decays in ${}^{232}$Th