Physics
Scientific paper
Sep 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987phlb..195..423s&link_type=abstract
Physics Letters B, Volume 195, Issue 3, p. 423-428.
Physics
114
Scientific paper
Spontaneous breaking of R parity in the standard supergravity model implies the existence of a majoron which is strongly constrained by astrophysics. This is suggested as the origin of the small parameter required for the resonant amplification of neutrino oscillations to take place in the sun. To a good approximation only one neutrino type (most likely the tau neutrino) acquires a mass. Therefore the form of the leptonic charged current is very much restricted: it is fully described by two mixing angles and there is no CP violation. As a result, matter can only amplify oscillations in one channel which, for small mixings, is vlvτ. Agreement with the chlorine data on the one hand and the nonobservation of charged supersymmetric states in e+e- collisions on the other, tightly restricts the parameters of the model in a way that will be directly tested by collider experiments.
Santamaria Arcadi
Valle Jose W. F.
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