Constraining sterile neutrinos with a low energy beta-beam

Details Constraining sterile neutrinos with a low energy beta-beam Constraining sterile neutrinos with a low energy beta-beam

2010-06-08

arxiv.org/abs/1006.1640v1

Published in AIP Conf.Proc.1222:169-173,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk given at 11th International Workshop on Neutrino Factories, Superbeams and Betabeams: NuFact09, Chicago, Illinois, 20-25

Scientific paper

We study the possibility to use a low energy beta-beam facility to search for sterile neutrinos by measuring the disappearance of electron anti-neutrinos. This channel is particularly sensitive since it allows to use inverse beta decay as detection reaction; thus it is free from hadronic uncertainties, provided the neutrino energy is below the pion production threshold. This corresponds to a choice of the Lorentz gamma=30 for the 6He parent ion. Moreover, a disappearance measurement allows the constraint of sterile neutrino properties independently of any CP violating effects. A moderate detector size of a few 100 tons and ion production rates of 2E13 per second are sufficient to constrain mixing angles as small as \sin^22\theta=0.01 at 99% confidence level.

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