Light neutrino and heavy particle exchange in $\nbb$-decay

Details Light neutrino and heavy particle exchange in $\nbb$-decay Light neutrino and heavy particle exchange in $\nbb$-decay

2004-09-20

arxiv.org/abs/hep-ph/0409235v1

Phys.Lett. B633 (2006) 93-97

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages

Scientific paper

A simple and precise method is presented to compare contributions to neutrinoless double-beta decay ($\nbb$-decay) from heavy particle exchange and light Majorana neutrino exchange. This procedure makes no assumptions about the momentum transfer between the two nucleons involved in the $\nbb$-decay process. It is shown that for a general particle physics model, the characteristic $\nbb$-decay scale $> 4.4$ TeV when all the coupling constants are assumed to be natural and of ${\cal{O}}(1)$.

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