Neutrinoless double beta decay in the nonminimal supersymmetric standard model

We consider the neutrinoless double beta decay in the minimal supersymmetric standard model (MSSM) with a gauge singlet superfield and R-parity violating interactions. Constraints on R-parity violating coupling, in particular, λ′111 are obtained from the current experimental lower limit on the neutrinoless double beta decay half-life. Owing to the extended neutralino sector, the constraints on λ111′ can be more stringent than that of the MSSM.