6533b7d4fe1ef96bd12620cc
RESEARCH PRODUCT
Third family quark–lepton unification at the TeV scale
Ben A. StefanekAdmir GreljoAdmir Greljosubject
QuarkNuclear and High Energy PhysicsParticle physicsHigh Energy Physics::LatticeFOS: Physical sciencesComputer Science::Digital Libraries01 natural sciencesHigh Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)High Energy Physics - Phenomenology (hep-ph)0103 physical sciencesLeptoquark010306 general physicsGauge symmetryPhysicsUnitarity010308 nuclear & particles physicsHigh Energy Physics::PhenomenologySymmetry (physics)lcsh:QC1-999High Energy Physics - PhenomenologyHigh Energy Physics::ExperimentNeutrinoAnomaly (physics)lcsh:PhysicsLeptondescription
We construct a model of quark-lepton unification at the TeV scale based on an $SU(4)$ gauge symmetry, while still having acceptable neutrino masses and enough suppression in flavor changing neutral currents. An approximate $U(2)$ flavor symmetry is an artifact of family-dependent gauge charges leading to a natural realization of the CKM mixing matrix. The model predicts sizeable violation of PMNS unitarity as well as a gauge vector leptoquark $U_1^\mu = ({\bf 3}, {\bf 1}, 2/3)$ which can be produced at the LHC -- both effects within the reach of future measurements. In addition, recently reported experimental anomalies in semi-leptonic $B$-meson decays, both in charged $b \to c \tau \nu$ and neutral $b \to s \mu \mu$ currents, can be accommodated.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-07-01 | Physics Letters B |