  We explore right-handed sneutrino-antisneutrino mixing in a TeV scale B-L
extension of the Minimal Supersymmetric Standard Model (MSSM), (B-L)SSM, where
a type I seesaw mechanism of light neutrino mass generation is naturally
implemented. The constraints imposed on the mass splitting between heavy
right-handed sneutrino and the corresponding antisneutrino by the experimental
limits set on the light neutrino masses are investigated. We also study direct
pair production of such right-handed sneutrinos at the Large Hadron Collider
(LHC) and its decay modes, emphasising that their decay into same-sign
di-lepton pairs are salient features for probing these particles at the CERN
machine. Finally, the charge asymmetry present in such same-sign di-lepton
signals is also analysed and confirms itself as a further useful handle to
extract information about the oscillation dynamics.
