Neutrino Masses and the LHC: Testing Type II Seesaw

Abstract

We demonstrate how to systematically test a well-motivated mechanism for neutrino mass generation (Type-II seesaw) at the LHC, in which a Higgs triplet is introduced. In the optimistic scenarios with a small Higgs triplet vacuum expectation value vd < 10^{-4} GeV, one can look for clean signals of lepton number violation in the decays of doubly charged and singly charged Higgs bosons to distinguish the Normal Hierarchy (NH), the Inverted Hierarchy (IH) and the Quasi-Degenerate (QD) spectrum for the light neutrino masses. The observation of either H+ --> tau+ nubar or H+ --> e+ nubar will be particularly robust for the spectrum test since they are independent of the unknown Majorana phases. The H++ decays moderately depend on a Majorana phase Phi2 in the NH, but sensitively depend on Phi1 in the IH. In a less favorable scenario vd > 2 10^{-4} GeV, when the leptonic channels are suppressed, one needs to observe the decays H+ --> W+ H_1 and H+ --> t bbar to confirm the triplet-doublet mixing which in turn implies the existence of the same gauge-invariant interaction between the lepton doublet and the Higgs triplet responsible for the neutrino mass generation. In the most optimistic situation, vd approx 10^{-4} GeV, both channels of the lepton pairs and gauge boson pairs may be available simultaneously. The determination of their relative branching fractions would give a measurement for the value of vd.

50 pages, 51 figures, minor corrections, one reference added, to appear in Physical Review D

References in corpus (21)

• Phenomenology with Massive Neutrinos
• Right-Handed Neutrinos at LHC and the Mechanism of Neutrino Mass Generation
• Low energy effects of neutrino masses
• Signatures for Majorana neutrinos at hadron colliders
• Heavy neutrino signals at large hadron colliders
• Pair Production of Doubly-Charged Scalars: Neutrino Mass Constraints and Signals at the LHC
• Probing seesaw at LHC
• Probing Majorana Phases and Neutrino Mass Spectrum in the Higgs Triplet Model at the LHC
• Neutrino mass hierarchy and Majorana CP phases within the Higgs triplet model at the LHC
• Renormalizable Adjoint SU(5)
• Direct determination of neutrino mass parameters at future colliders
• Large underground, liquid based detectors for astro-particle physics in Europe: scientific case and prospects
• Upper Bound on the Mass of the Type III Seesaw Triplet in an SU(5) Model
• Testing neutrino masses in little Higgs models via discovery of doubly charged Higgs at LHC
• Testing a Neutrino Mass Generation Mechanism at the Large Hadron Collider
• Neutrino physics at large colliders
• Fermion Masses and the UV Cutoff of the Minimal Realistic SU(5)
• Unification versus proton decay in SU(5)
• Testing Radiative Neutrino Mass Generation at the LHC
• A Compromise between Neutrino Masses and Collider Signatures in the Type-II Seesaw Model
• Neutrino oscillations: present status and outlook

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