Lepton Number Violation in Higgs Decay at LHC

Abstract

We show that within the Left-Right symmetric model, lepton number violating decays of the Higgs boson can be discovered at the LHC. The process is due to the mixing of the Higgs with the triplet that breaks parity. As a result, the Higgs can act as a gateway to the origin of heavy Majorana neutrino mass. To assess the LHC reach, a detailed collider study of the same-sign di-leptons plus jets channel is provided. This process is complementary to the existing nuclear and collider searches for lepton number violation and can probe the scale of parity restoration even beyond other direct searches.

6 pages. Version matching PRL one. Updated references, minor clarifications, conclusions unchanged. Enjoy

References in corpus (29)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• PYTHIA 6.4 Physics and Manual
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• MadAnalysis 5, a user-friendly framework for collider phenomenology
• $0\nu \beta \beta$ and $2\nu \beta \beta$ nuclear matrix elements in the interacting boson model with isospin restoration
• Nuclear matrix elements for double-β decay
• Left-Right Symmetry: from LHC to Neutrinoless Double Beta Decay
• General CP Violation in Minimal Left-Right Symmetric Model and Constraints on the Right-Handed Scale
• Search for resonances and quantum black holes using dijet mass spectra in proton-proton collisions at sqrt(s) = 8 TeV
• Search for heavy neutrinos and W bosons with right-handed couplings in proton-proton collisions at sqrt(s) = 8 TeV
• Limits on the neutrino mass from neutrinoless double-$\beta$ decay
• Emerging Jets
• A second Higgs from the Higgs portal
• Probing seesaw at LHC
• Present and Future K and B Meson Mixing Constraints on TeV Scale Left-Right Symmetry
• First Limits on Left-Right Symmetry Scale from LHC Data
• Left-Right Symmetry: from Majorana to Dirac
• Right Handed Quark Mixing in Left-Right Symmetric Theory
• Search for anomalous production of prompt same-sign lepton pairs and pair-produced doubly charged Higgs bosons with $\sqrt{s}=8$ TeV $pp$ collisions using the ATLAS detector
• Strong P invariance, neutron EDM and minimal Left-Right parity at LHC
• Lepton Number Violation and W' Chiral Couplings at the LHC
• Broadening the Higgs Boson with Right-Handed Neutrinos and a Higher Dimension Operator at the Electroweak Scale
• Right-Handed Quark Mixings in Minimal Left-Right Symmetric Model with General CP Violation
• The Inverse Seesaw in Conformal Electro-Weak Symmetry Breaking and Phenomenological Consequences
• Flavour in heavy neutrino searches at the LHC
• The lowest limits on the doubly charged Higgs boson masses in the minimal left-right symmetric model
• Viability of minimal left-right models with discrete symmetries
• Collider signatures of sterile neutrinos in models with a gauge-singlet Higgs

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• Hadron Collider Signatures of Lepton Number Violation in the Type II Seesaw Model
• Charged Lepton Flavor Violation at the High-Energy Colliders: Neutrino Mass Relevant Particles
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• Loop-Level Lepton Flavor Violation and Diphoton Signals in the Minimal Left-Right Symmetric Model
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• Displaced fat-jets and tracks to probe boosted right-handed neutrinos in the $U(1{)}_{B-L}$ model