CERN Accelerating science

Article
Report number	arXiv:0901.3491
Title	Laboratory tests for the cosmic neutrino background using beta-decaying nuclei
Related title	Laboratory tests for the cosmic neutrino background using beta-decaying nuclei
Author(s)	McElrath, Bob (CERN)
Publication	2009
Imprint	23 Jan 2009
Number of pages	4
Note	Comments: 4 pages, 2 figures, contribution to procedings of PANIC 2008
In:	18th Particle and Nuclei International Conference, Eilat, Israel, 9 - 14 Nov 2008, pp.806-809
Subject category	hep-ph
Abstract	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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