RADIATIVE PRODUCTION OF SNEUTRINOS IN E- ANNIHILATION WITH POLARIZED BEAMS(E)

We give for the process e+ + e- --> nu + nuBAR + gamma of radiative sn eutrino production with polarized beams the complete analytic expressi on for the transition amplitude. For beam energies between 100 and 500 GeV the total cross section, the photon energy spectrum, and photon a ngular distribution as well as the respective longitudinal polarizatio n asymmetries are computed in representative gaugino-Higpino mixing sc enarios with the sneutrino decaying only into the lightest neutralino. Comparing the results with those for the competing standard process o f radiative neutrino production we show that with the expected luminos ity for a 500-GeV e+e- collider it would be difficult to identify a sn eutrino lighter than both the chargino and the second lightest neutral ino. The use of longitudinally polarized beams especially would not fa cilitate identification of the sneutrino in this mass region.