Implication of Super-Kamiokande Data on R-parity Violation

Abstract

R-parity violating bilinear (soft) terms in the supersymmetric standard model would be the leading source for nonzero neutrino masses and mixing. We point out that the mixing between neutralinos (charginos) and neutrinos (charged leptons) driven by the bilinear terms take factorized forms, which may enable us to probe the neutrino mixing parameters in a collider. It is then shown that the Super-Kamiokande data on atmospheric neutrinos require all the baryon number violating couplings to be substantially suppressed: ${\lambda }_{\mathrm{any}}^{\prime \prime }<10^{-9}$.

11 pages, LaTeX, to appear in Phys. Rev. D

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