Neutrino Decay of Positronium in the Standard Model and Beyond
classification
✦ hep-ph
keywords
decaybeyondmodelneutrinoorthopositroniumstandardallowsalthough
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Whether in the Standard Model or beyond it, neutrinos contribute to the invisible decay mode of orthopositronium but practically not at all to that of parapositronium. Although this remark does not resolve the orthopositronium decay puzzle, it allows for upper bounds to be set on neutrino magnetic moments.
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