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arXiv · 1708.03650

Extra Higgs Boson and $Z'$ as Portals to Signatures of Heavy Neutrinos at the LHC

Elena Accomando·Luigi Delle Rose·Stefano Moretti·Emmanuel Olaiya·Claire H. Shepherd-Themistocleous
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Abstract

In this paper, we discuss the potential of observing heavy neutrino ($\nu_h$) signatures of a $U(1)_{B-L}$ enlarged Standard Model (SM) encompassing three heavy Majorana neutrinos alongside the known light neutrino states at the Large Hadron Collider (LHC). We exploit the theoretical decay via a pair of heavy (non-SM-like) Higgs boson and $Z'$ production followed by $\nu_h \rightarrow l^\pm W^{\mp (*)}$ and $\nu_h \rightarrow \nu_l Z^{(*)}$ decays, ultimately yielding a $3l+2j+E_{T}^{\rm{miss}}$ signature and, depending upon how boosted the final state objects are, we define different possible selections aimed at improving the signal to background ratio in LHC Run 2 data for a wide range of heavy neutrino masses.

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Elena Accomando, Luigi Delle Rose, Stefano Moretti, Emmanuel Olaiya, Claire H. Shepherd-Themistocleous. 2017-08-14. Extra Higgs Boson and $Z'$ as Portals to Signatures of Heavy Neutrinos at the LHC. https://doi.org/10.1007/jhep02(2018)109

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