Predicting Neutrinoless Double Beta Decay

Details Predicting Neutrinoless Double Beta Decay Predicting Neutrinoless Double Beta Decay

2005-07-12

arxiv.org/abs/hep-ph/0507148v1

Phys.Rev.D72:091301,2005; Erratum-ibid.D72:119904,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 5 figures, 1 table

Scientific paper

10.1103/PhysRevD.72.091301 10.11

We give predictions for the neutrinoless double beta decay rate in a simple variant of the A_4 family symmetry model. We show that there is a lower bound for the neutrinoless double beta decay amplitude even in the case of normal hierarchical neutrino masses, corresponding to an effective mass parameter |m_{ee}| >= 0.17 \sqrt{\Delta m^2_{ATM}}. This result holds both for the CP conserving and CP violating cases. In the latter case we show explicitly that the lower bound on |m_{ee}| is sensitive to the value of the Majorana phase. We conclude therefore that in our scheme, neutrinoless double beta decay may be accessible to the next generation of high sensitivity experiments.

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