The new $(g-2)_μ$ and Right-Handed Sneutrino Dark Matter

Abstract

In this paper we offer an explanation of the (g − 2) µ discrepancy in a R-parity conserving supersymmetric model with right-handed neutrinos in which the righthanded sneutrino is a viable dark matter candidate. We find that our scenario satisfies all up to date constraints including the latest results on (g − 2) µ . Since right-handed sneutrinos are singlets, no new contributions for δa µ with respect to the next to minimal supersymmetric Standard Model are present. However, the possibility to have the right-handed sneutrino as the lightest supersymmetric particle opens new ways to escape Large Hadron Collider and dark matter constraints. We find that dark matter masses within 10 m νR 600 GeV are fully compatible with current experimental constraints. In addition, future dark matter direct detection experiments will be able to explore a sizable portion of the allowed parameter space with m νR 300 GeV, while indirect detection experiments will be able to probe a much smaller fraction within 200 m νR 350 GeV.