Novel SM-like Higgs decay into displaced heavy neutrino pairs in U(1)' models

Abstract

We examine the observability of heavy neutrino (nu_h) signatures of a U(1)' enlarged Standard Model (SM) encompassing three heavy Majorana neutrinos alongside the known light neutrino states at the the Large Hadron Collider (LHC). We show that heavy neutrinos can be rather long-lived particles producing distinctive displaced vertices that can be accessed in the CERN LHC detectors. We concentrate here on the gluon fusion production mechanism gg -> H_{1,2} -> nu_h nu_h, where H_1 is the discovered SM-like Higgs and H_2 is a heavier state, yielding displaced leptons following nu_h decays into weak gauge bosons. Using data collected by the end of the LHC Run 2, these signatures would prove to be accessible with negligibly small background.

30 pages, journal version

References in corpus (7)

• The Minimal Set of Electroweak Precision Parameters
• Search for long-lived particles that decay into final states containing two electrons or two muons in proton-proton collisions at sqrt(s) = 8 TeV
• Radiative B-L symmetry breaking in supersymmetric models
• Search for narrow resonances in dilepton mass spectra in proton-proton collisions at sqrt(s) = 13 TeV and combination with 8 TeV data
• Search for Displaced Supersymmetry in events with an electron and a muon with large impact parameters
• $Z^{\prime }$ discovery potential at the LHC in the minimal $B-L$ extension of the Standard Model
• Collider signatures of sterile neutrinos in models with a gauge-singlet Higgs

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