245 citations · 1.2k across the 27 of their papers we have counts for
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hep-ph2021★ 59 cited
Addressing the CKM Unitarity Problem with a Vector-like Up Quark
G. C. Branco, J. T. Penedo, Pedro M. F. Pereira +2
We point out that hints of deviations from unitarity in the first row of the CKM matrix may be explained by the presence of a single vector-like top. We study how the stringent exp…
hep-ph2021★ 90 cited
Fermion Mass Hierarchies, Large Lepton Mixing and Residual Modular Symmetries
P. P. Novichkov, J. T. Penedo, S. T. Petcov
In modular-invariant models of flavour, hierarchical fermion mass matrices may arise solely due to the proximity of the modulus to a point of residual symmetry. This mechanism…