Two-Neutrino Double Beta Decay with Sterile Neutrinos

Abstract

Usually considered a background for experimental searches for the hypothetical neutrinoless double beta decay process, two-neutrino double beta decay nevertheless provides a complementary probe of physics beyond the Standard Model. In this paper we investigate how the presence of a sterile neutrino, coupled to the Standard Model either via a left-handed or right-handed current, affects the energy distribution and angular correlation of the outgoing electrons in two-neutrino double beta decay. We pay particular attention on the behaviour of the energy distribution at the kinematic endpoint and we estimate the current limits on the active-sterile mixing and effective right-handed coupling using current experimental data as a function of the sterile neutrino mass. We also investigate the sensitivities of future experiments. Our results complement the corresponding constraints on sterile neutrinos from single beta decay measurements in the 0.1 - 10 MeV mass range.

28 pages, 7 figures, extended discussion of end point behaviour, matches published version

References in corpus (6)

• Light Sterile Neutrinos: A White Paper
• Determining the neutrino mass with Cyclotron Radiation Emission Spectroscopy - Project 8
• Arbitrary mass Majorana neutrinos in neutrinoless double beta decay
• Precision Analysis of the ${}^{136}$Xe Two-Neutrino $\beta \beta$ Spectrum in KamLAND-Zen and Its Impact on the Quenching of Nuclear Matrix Elements
• Neutrino Self-Interactions and Double Beta Decay
• Lepton Number Violating Processes Mediated by Majorana Neutrinos at Hadron Colliders

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