Heavy neutrinos and neutral gauge boson Z' at the LHC

Abstract

We explore possible signatures for heavy neutrinos and neutral gauge boson, Z', in TeV scale B-L extension of the Standard Model (BLSM) with inverse seesaw mechanisms at the Large Hadron Collider. We show that due to new decay channels of Z' into heavy/inert neutrinos, the LHC stringent bounds imposed on Z' mass can be significantly relaxed. We analyze the pair production of heavy neutrinos decaying to four leptons plus two neutrinos, four jets plus two leptons, or three leptons plus two jets and one neutrino. We show that the 4l + 2 nu is the most promising decay channel for probing both Z' and heavy neutrinos at the LHC.

arXiv comment6 pages, 6 figures

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• LHC signatures of a Z' mediator between dark matter and the SU(3) sector
• Collider Bounds on 2-Higgs Doublet Models with $U(1{)}_X$ Gauge Symmetries
• Freeze-in Dark Matter from a Minimal B-L Model and Possible Grand Unification
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