An unmixed 17 keV neutrino

Details An unmixed 17 keV neutrino An unmixed 17 keV neutrino

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992phlb..281..351m&link_type=abstract

Physics Letters B, Volume 281, Issue 3-4, p. 351-356.

Physics

1

Scientific paper

We argue that the observation of the kink in the electron energy spectrum in β decay does not necessarily imply mixing amongst the neutrinos. We have constructed a model in which the kink occurs because the neutron can also β decay into an isosinglet neutrino (with a Dirac mass of 17 keV) via a new interaction mediated by spin zero, Q=-1/3 leptoquarks with a mass of 100-1000 GeV. Our model can be tested by modest improvements in the measurement of the longitudinal polarisation of electrons in β decay and in the branching fraction of the pion decay to electron. Astrophysical and cosmological implications of this new interaction of neutrinos are also discussed.

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