CP violation, sneutrino oscillation and neutrino masses in R-parity violating supersymmetric standard model

In supersymmetric theories, sneutrino-antisneutrino mixing can occur with the oscillation time similar to 0.01 ps corresponding the atmospheric neutrino mass scale similar to 0.05 eV. We explore the possibility of observing sneutrino oscillation phenomena and CP violation when R-parity violation explains the observed neutrino masses and mixing. It is shown for some parameter region in the bilinear model of R-parity violation that the tiny sneutrino mass splitting and time-dependent CP violating asymmetries could be measured in the future experiments if the tau sneutrino is the lightest supersymmetric particle. (C) 2002 Published by Elsevier Science B.V.