Radiative linear seesaw model, dark matter, and U(1)B-L

In this paper we propose a radiated linear seesaw model where the naturally small term mu(L) is generated at the one-loop level and its soft breaking of lepton number symmetry contributes to the spontaneous breaking (SSB) of B - L gauge symmetry. The value of B - L charges for new particles are assigned to satisfy the cancellation of anomalies. It is found that some new particles may have exotic values of B - L charge such that there exists residual Z(2) x Z(2)(') symmetry even after SSB of B - L gauge symmetry. The Z(2) x Z(2)(') discrete symmetry stabilizes these particles as dark matter candidates. In the model, two classes of inert fermions and scalars with different B - L charges are introduced, leading to two-component dark matter candidates. The lepton-flavor-violation processes, the relic density of dark matter, the direct detection of dark matter and the phenomenology at the LHC are investigated.