Endpoint Structure in Beta Decay from Coherent Weak-Interaction of the Neutrino

Details Endpoint Structure in Beta Decay from Coherent Weak-Interaction of the Neutrino Endpoint Structure in Beta Decay from Coherent Weak-Interaction of the Neutrino

1996-11-25

arxiv.org/abs/hep-ph/9611420v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

Small paragraph added with estimate of {\it quantitative} effect of the potential on experimental data. References to recent r

Scientific paper

Recent tritium beta decay experiments yield unphysical negative best-fit values for the square of the neutrino mass. An unidentified bump-like excess of counts few eV below the endpoint in the electron energy spectrum has been tentatively recognized as the source of this anomaly. It is shown that the repulsive potential acting on the emitted antineutrino and originating in its coherent weak-interaction with the daughter atom may effectively account for this excess.

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