Impact of CP phases on neutrinoless double beta decay

Details Impact of CP phases on neutrinoless double beta decay Impact of CP phases on neutrinoless double beta decay

2003-04-16

arxiv.org/abs/hep-ph/0304159v2

Phys.Rev. D68 (2003) 033004

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, latex, 9 eps figs, version to appear in Phys Rev D

Scientific paper

10.1103/PhysRevD.68.033004

We highlight in a model independent way the dependence of the effective Majorana mass parameter, relevant for neutrinoless double beta decay, on the CP phases of the PMNS matrix, using the most recent neutrino data including the cosmological WMAP measurement. We perform our analysis with three active neutrino flavours in the context of three kinds of mass spectra: quasi-degenerate, normal hierarchical and inverted hierarchical. If a neutrinoless double beta decay experiment records a positive signal, then assuming that Majorana masses of light neutrinos are responsible for it, we show how it might be possible to discriminate between the three kinds of spectra.

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