Third family quark–lepton unification at the TeV scale
By Admir Greljo, B. A. Stefanek. Physics Letters B, 2018
189 citations recorded by the source corpus.
Abstract We construct a model of quark–lepton unification at the TeV scale based on an S U ( 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 μ = ( 3 , 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 → c τ ν and neutral b → s μ μ currents, can be accommodated.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/5615b57f436cfd654c6552be174de1c3d97d84ae
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In Nuclear and High Energy Physics
- David M. Straub
- J. Fuentes-Martín
- Marco Nardecchia
- P. Stangl
- W. Altmannshofer
- Jason Aebischer
- Admir Greljo
- D. Guadagnoli
Citations in the corpus
- Maximal flavour violation: a Cabibbo mechanism for leptoquarks (2018, background): “The latter either require a strong fine-tuning in the Yukawa structure or a very specific (untuned) realisation of the neutrino mass matrix by the inverse seesaw mechanism [44, 63].”
- B-decay discrepancies after Moriond 2019 (2019, methodology): “This puts some tension on models based on a U(2)q flavour symmetry [37, 83, 87, 89], where the natural expectation for the size of g32 lq g33 lq is |Vcb| ≈ 0.”