Sensitivity of Neutrino Mass Experiments to the Cosmic Neutrino Background

Details Sensitivity of Neutrino Mass Experiments to the Cosmic Neutrino Background Sensitivity of Neutrino Mass Experiments to the Cosmic Neutrino Background

2010-06-09

arxiv.org/abs/1006.1886v1

Physics

High Energy Physics

High Energy Physics - Experiment

Scientific paper

The KATRIN neutrino experiment is a next-generation tritium beta decay experiment aimed at measuring the mass of the electron neutrino to better than 200 meV at 90% C.L. Due to its intense tritium source, KATRIN can also serve as a possible target for the process of neutrino capture, {\nu}e +3H \to 3He+ + e-. The latter process, possessing no energy threshold, is sensitive to the Cosmic Neutrino Background (C{\nu}B). In this paper, we explore the potential sensitivity of the KATRIN experiment to the relic neutrino density. The KATRIN experiment is sensitive to a C{\nu}B over-density ratio of 2.0x 10^9 over standard concordance model predictions (at 90% C.L.), addressing the validity of certain speculative cosmological models.

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