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In the inverse seesaw mechanism where the spontaneously broken B-L symmetryinduces tiny B-L violating Majorana masses for right-handed neutrinos,non-standard Higgs signatures can arise due to a possible Higgs doublet andsinglet mixing and/or Higgs boson decays to a left- and right-handed neutrino.This leads to a remarkable feature of hadronically quiet di-lepton final stateswhich can exhibit, in particular, lepton flavour violating signatures comingfrom flavour-dependent neutrino Yukawa couplings. In this process, one leptoncoming from the right-handed decay could be soft enough can be missed by thetrigger level cuts of CMS and ATLAS for the di-lepton plus missing energysignature. The prospects of such a signature are investigated for 8 TeV and 14TeV center of mass energy of the LHC, taking the maximum value of the allowedneutrino Yukawa coupling and the right-handed neutrino mass of 100 GeV. APYTHIA level simulation shows that the integrated luminosity of 10--20/fb and1.6/fb for 8 TeV is required to observe the inclusive leptonic and leptonflavour violating signatures, respectively. For 14 TeV, the reach is more and alarger parameter space of the inverse seesaw model can be probed.

Higgs Signatures in Inverse Seesaw Model at the LHC