Neutrino Decay of Positronium in the Standard Model and Beyond

Abstract

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.

10 pages, LateX file

References in corpus (6)

• Order m alpha^8 Contributions to the Decay Rate of Orthopositronium
• A search for massive neutral bosons in orthopositronium decay
• Decay Rate of a Positronium. Review of Theory and Experiment
• Neutrino Magnetic Moment and the Process $\nu e\to \nu e\gamma$
• THE ORTHOPOSITRONIUM DECAY PUZZLE AND PRIMORDIAL NUCLEOSYNTHESIS
• Non-Zero Electric Charge of the Neutrino and the Solar Neutrino Problem

Cited by in corpus (6)

• An Improved Limit on Invisible Decays of Positronium
• Precision Study of Positronium: Testing Bound State QED Theory
• Extra dimensions and invisible decay of orthopositronium
• Ditauonium spectroscopy
• A large-momentum-transfer matter-wave interferometer to measure the effect of gravity on positronium
• Positronium Decays with Dark $Z$ and Fermionic Dark Matter