6533b7d8fe1ef96bd1269a4e
RESEARCH PRODUCT
Neutrino mass hierarchy and Majorana CP phases within the Higgs triplet model at the LHC
Julia GarayoaT. Schwetzsubject
PhysicsNuclear and High Energy PhysicsParticle physicsLarge Hadron ColliderPhysics::Instrumentation and DetectorsHigh Energy Physics::PhenomenologyPontecorvo–Maki–Nakagawa–Sakata matrixFOS: Physical sciencesMass matrixMAJORANAHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Mass spectrumHiggs bosonHigh Energy Physics::ExperimentNeutrinoLeptonParticle Physics - Phenomenologydescription
Neutrino masses may be generated by the VEV of an $SU(2)_L$ Higgs triplet. We assume that the doubly charged component of such a triplet has a mass in the range of several 100 GeV, such that it is accessible at LHC. Its decay into like-sign leptons provides a clean experimental signature, which allows for a direct test of the neutrino mass matrix. By exploring the branching ratios of this decay into leptons of various flavours, we show that within this model the type of the neutrino mass spectrum (normal, inverted or quasi-degenerate) might actually be resolved at the LHC. Furthermore, we show that within the Higgs triplet model for neutrino mass the decays of the doubly charged scalar into like-sign lepton pairs at the LHC provide a possibility to determine the Majorana CP phases of the lepton mixing matrix.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-12-10 |