Electroweak breaking and neutrino mass: "invisible" Higgs decays at the LHC (Type II seesaw)

Abstract

Neutrino mass generation through the Higgs mechanism not only suggests the need to reconsider the physics of electroweak symmetry breaking from a new perspective, but also provides a new theoretically consistent and experimentally viable paradigm. We illustrate this by describing the main features of the electroweak symmetry breaking sector of the simplest type-II seesaw model with spontaneous breaking of lepton number. After reviewing the relevant "theoretical" and astrophysical restrictions on the Higgs sector, we perform an analysis of the sensitivities of Higgs boson searches at the ongoing ATLAS and CMS experiments at the LHC, including not only the new contributions to the decay channels present in the Standard Model (SM) but also genuinely non-SM Higgs boson decays, such as "invisible" Higgs boson decays to majorons. We find sensitivities that are likely to be reached at the upcoming Run of the experiments.

30 pages, 12 figures; Some references added. Matches NJP published version

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Cited by in corpus (19)

• Naturalness, Vacuum Stability and Leptogenesis in the Minimal Seesaw Model
• Type-II Seesaw Scalar Triplet Model at a 100 TeV $pp$ Collider: Discovery and Higgs Portal Coupling Determination
• Revisiting the high-scale validity of Type-II seesaw model with novel LHC signature
• Predictive Pati-Salam theory of fermion masses and mixing
• Higgs precision study of the 750 GeV diphoton resonance and the 125 GeV standard model Higgs boson with Higgs-singlet mixing
• Gravitational footprints of massive neutrinos and lepton number breaking
• Dark matter as the origin of neutrino mass in the inverse seesaw mechanism
• Global $U(1{)}_L$ Breaking in Neutrinophilic 2HDM: From LHC Signatures to X-Ray Line
• Revealing the origin of neutrino masses through the Type II Seesaw mechanism at high-energy muon colliders
• Phenomenology of fermion dark matter as neutrino mass mediator with gauged B-L
• Dynamical inverse seesaw mechanism as a simple benchmark for electroweak breaking and Higgs boson studies
• Electroweak Breaking and Higgs Boson Profile in the Simplest Linear Seesaw Model
• High-energy colliders as a probe of neutrino properties
• Type-II Majoron Dark Matter
• Dark matter as the source of neutrino mass: theory overview and experimental prospects
• Inverse seesaw mechanism with compact supersymmetry: enhanced naturalness and light super-partners
• Vacuum stability and spontaneous violation of the lepton number at low energy scale in a model for light sterile neutrinos
• Vacuum Stability and Radiative Symmetry Breaking of the Scale-Invariant Singlet Extension of Type II Seesaw Model
• Natural and Dynamical Neutrino Mass Mechanism at the LHC