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We propose an Abelian gauged version of the singlet-doublet fermionic darkmatter (DM) model where DM, combination of a vector like fermion doublet and afermion singlet, is naturally stabilised by the gauge symmetry withoutrequiring any ad-hoc discrete symmetries. In order to have good detectionprospects at collider experiments like the large hadron collider (LHC) andenlarged parameter space for low mass DM, we consider the additional gaugesymmetry to be based on the quantum $B-3L_{\tau}$ where the restriction tothird generation of leptons is chosen to have weaker bounds from the LHC on thecorresponding gauge boson. The triangle anomalies arising in this model can becancelled by including a right handed neutrino which takes part in generatinglight neutrino masses through type I seesaw mechanism. Apart from DM, colliderprospects and light neutrino masses, the model also offers high scale validitygiving rise to a stable electroweak vacuum and perturbative couplings all theway up to the Planck scale. We constrain our model parameters from theserequirements as well as existing relevant constraints related to DM andcolliders.

Flavoured gauge extension of singlet-doublet fermionic dark matter: neutrino mass, high scale validity and collider signatures