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Phys. Rev. D 72, 091301(R) (2005) [5 pages]

Predicting neutrinoless double beta decay

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M. Hirsch1,*, Ernest Ma2,3,†, A. Villanova del Moral1,‡, and J. W. F. Valle1,§
1AHEP Group, Instituto de Física Corpuscular – C.S.I.C./Universitat de València, Edificio Institutos de Paterna, Apt 22085, E–46071 Valencia, Spain
2Physics Department, University of California, Riverside, California 92521, USA
3Institute for Particle Physics Phenomenology, University of Durham, Durham, DH1 3LE, United Kingdom

See Also: Publisher's Note

Received 18 July 2005; published 1 November 2005; corrected 2 December 2005

We give predictions for the neutrinoless double beta decay rate in a simple variant of the A4 family symmetry model. We show that there is a lower bound for the ββ0ν amplitude even in the case of normal hierarchical neutrino masses, corresponding to an effective mass parameter |mee|≥0.17√ΔmATM2. This result holds both for the CP conserving and CP violating cases. In the latter case we show explicitly that the lower bound on |mee| is sensitive to the value of the Majorana phase. We conclude therefore that in our scheme, ββ0ν may be accessible to the next generation of high sensitivity experiments.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.72.091301
DOI:
10.1103/PhysRevD.72.091301
PACS:
14.60.Pq, 11.30.Hv, 12.60.Fr, 23.40.Bw

*Electronic address: Martin.Hirsch@ific.uv.es

†Electronic address: ma@phyun8.ucr.edu

‡Electronic address: Albert.Villanova@ific.uv.es

§Electronic address: valle@ific.uv.es

See Also

Publisher's Note: M. Hirsch, A. Villanova del Moral, J. W. Valle, and Ernest Ma, Publisher’s Note: Predicting neutrinoless double beta decay [Phys. Rev. D 72, 091301 (2005)], Phys. Rev. D 72, 119904 (2005).

 
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