TL;DR
This paper explores how a supersymmetric SO(10) GUT model unifies down quarks and leptons, linking neutrino mixing to observable CP violation in meson mixing, with constraints from flavor physics.
Contribution
It demonstrates the impact of neutrino mixing on flavor-changing processes and constrains Yukawa corrections using flavor observables within a unified GUT framework.
Findings
Neutrino mixing induces significant CP phases in Bs-Bsbar mixing.
Yukawa corrections are strongly constrained by epsilonK.
Flavor structure links down quark and lepton sectors in the model.
Abstract
We probe the unification of down quarks and leptons in a supersymmetric SO(10) GUT. The large atmospheric neutrino mixing angle induces bR-sR transitions, which can account for the sizeable CP phase measured in Bs-Bsbar mixing. Corrections to down-quark-lepton unification from higher-dimensional Yukawa terms translate neutrino mixing also into sR-dR and bR-dR currents. We find the flavour structure of Yukawa corrections to be strongly constrained by epsilonK.
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