Right-handed Sneutrino Inflation in SUSY B-L with Inverse Seesaw

Understand

We propose a scenario for realizing inflation in the framework of supersymmetric B-L extension of the Standard Model.

• We find that one of the associated right-handed sneutrinos (the superpartner of the Standard Model singlet fermion) can provide a new non-trivial inflationary trajectory at tree level (therefore breaking B-L during inflation).
• As soon as the inflation ends, the right-handed sneutrino falls into the supersymmetric vacuum, with a vanishing vacuum expectation value, so that B-L symmetry is restored.
• In this class of models, the B-L gauge symmetry will be radiatively broken at a TeV scale and light neutrino masses are generated through the inverse seesaw mechanism.