Constraints on heavy neutrinos

Details Constraints on heavy neutrinos Constraints on heavy neutrinos

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981natur.289..777t&link_type=abstract

Nature, vol. 289, Feb. 26, 1981, p. 777, 778.

Physics

24

Cosmic Rays, Elementary Particles, Energetic Particles, Neutrinos, Particle Mass, Radioactive Decay, Big Bang Cosmology, Electromagnetic Interactions, High Energy Electrons, Solar Electrons

Scientific paper

If a heavy neutrino of mass between 1.1 MeV and 14 MeV participates in the weak charged current coupling for the electron, then it can be produced in the sun and decay in flight into an electron, a positron and a light neutrino. It is shown here that existing experimental bounds on low-energy interplanetary positrons severely constrain the heavy neutrino-electron coupling. Accelerator experiments severely constrain the coupling of still heavier neutrinos.

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