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Emergent new symmetry from the Higgs shadow
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abstract
We show in this Letter how a new hidden gauge symmetry responsible for neutrino mass as well as dark matter (DM) in the Universe can be discovered through scalar mediators responsible for breaking the new symmetry. The new force mediator ($Z'$) may be lighter than the Standard Model (SM) gauge bosons but cannot be observed in traditional searches for new gauge bosons. We highlight a novel way of discovering such a symmetry at the Large Hadron Collider (LHC) by incorporating an existing ATLAS analysis on four lepton final states which include the Higgs resonance. In addition, we show that the hidden sector also introduces flavor violation in the lepton sector which can become a significant channel of discovery for the new force.
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Cited by 1 Pith paper
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Signals for a 2HDM with $Z'$ at the LHC
In a U(1)-extended two-Higgs-doublet model, scalar decays to a light Z' produce multilepton signals at the LHC, with discovery potential for scalar masses above 350 GeV at 3000 fb^-1.
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