Laboratory tests for the cosmic neutrino background using beta-decaying nuclei

Details Laboratory tests for the cosmic neutrino background using beta-decaying nuclei Laboratory tests for the cosmic neutrino background using beta-decaying nuclei

2009-01-22

arxiv.org/abs/0901.3491v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures, contribution to procedings of PANIC 2008

Scientific paper

We point out that the Pauli blocking of neutrinos by cosmological relic neutrinos can be a significant effect. For zero-energy neutrinos, the standard parameters for the neutrino background temperature and density give a suppression of approximately 1/2. We show the effect this has on three-body beta decays. The size of the effect is of the same order as the recently suggested neutrino capture on beta-decaying nuclei.

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