R-Parity Violation and Photon-Neutrino Interactions

Abstract

In the framework of the supersymmetric theories with R-parity violation we consider the process $\gamma \gamma \to {\nu }_i\overline{{\nu }_j}$ and its contribution into energy loss from the stars.Under some conditions the studied contribution exceeds the standard model contribution to the same process.

5 pages, LaTeX file, using eps.sty, 1 ps figures included