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

TL;DR

This paper investigates right-handed sneutrino-antisneutrino oscillations within a TeV scale B-L extended supersymmetric model, analyzing experimental constraints, production at the LHC, decay modes, and charge asymmetry as a probe.

Contribution

It introduces a detailed study of sneutrino-antisneutrino mixing in a B-L supersymmetric model, including experimental constraints and collider signatures.

Findings

Mass splitting constrained by neutrino mass limits

Sneutrino pair production and decay into same-sign dileptons at LHC

Charge asymmetry as a probe of oscillation dynamics

Abstract

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.