Right-handed sneutrino-antisneutrino oscillations in a TeV scale supersymmetric B - L model.

We explore right-handed sneutrino-antisneutrino mixing in a TeV-scale B -- L extension of the Minimal Supersymmetric Standard Model, where a type-I seesaw mechanism of light neutrino mass generation is naturally implemented. The constraints imposed on the mass splitting between a 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 and their decay modes, emphasizing that their decay into same-sign dilepton pairs is a salient feature for probing these particles at the CERN machine. Finally, the charge asymmetry present in such same-sign dilepton signals is also analyzed and confirms itself as a further useful handle to extract information about the oscillation dynamics. [ABSTRACT FROM AUTHOR]