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

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arxiv 1708.03650 v1 pith:FLEAM4BY submitted 2017-08-14 hep-ph

Elena Accomando , Luigi Delle Rose , Stefano Moretti , Emmanuel Olaiya , Claire H. Shepherd-Themistocleous This is my paper · ORCID
classification hep-ph
keywords heavyneutrinobosonhiggsneutrinosrightarrowsignaturesaimed
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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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Forward citations

Cited by 4 Pith papers

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  1. ALP and $Z^\prime$ boson at the Electron-Ion collider

    hep-ph 2026-01 conditional novelty 5.0 of 10

    Projected EIC tri-electron searches would constrain electron-coupled ALPs and Z' bosons more strongly than current experiments at masses of about 10-100 GeV and 10-30 GeV, respectively.

  2. Right-handed neutrino production through first-generation leptoquarks

    hep-ph 2024-12 conditional novelty 5.0 of 10

    At the HL-LHC, first-generation leptoquarks decaying to right-handed neutrinos are discovered most efficiently through indirect t-channel production, reaching leptoquark masses of roughly 3 to 10 TeV when the new coup...

  3. Heavy Neutral Leptons without Prejudice

    hep-ph 2024-12 conditional novelty 5.0 of 10

    HL-LHC and FCC-ee can probe HNL Yukawa couplings down to y^2 near 10^-4 to 10^-6 depending on mass; at zero mixing, Higgs width precision is the strongest constraint and the two colliders have comparable reach.

  4. Characterisation at the HL-LHC of Long-lived Heavy Neutrinos in Gauge Extensions of the Standard Model

    hep-ph 2026-07 conditional novelty 4.0 of 10

    Displaced heavy-neutrino signals in LRSM and U(1)B−L remain accessible at the HL-LHC, with parton-level mass, lifetime, and AFB handles in low-background regions.

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