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Flipped Angles and Phases: A Systematic Study

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arxiv hep-ph/9303307 v1 pith:TL3UHRMJ submitted 1993-03-25 hep-ph

Flipped Angles and Phases: A Systematic Study

classification hep-ph
keywords neutrinoanglesbaryondecayratiosrelatedbranchingflavour
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We discuss systematically the fermion mass and mixing matrices in a generic \linebreak field-theoretical flipped $SU(5)$ model, with particular applications to neutrino and baryon number-changing physics. We demonstrate that the different quark flavour branching ratios in proton decay are related to the Cabibbo-Kobayashi-Maskawa angles, whereas the lepton flavour branching ratios are undetermined. The light neutrino mixing angles observable via oscillation effects are related to the heavy conjugate (right-handed) neutrino mass matrix, which also plays a key role in cosmological baryogenesis. The ratios of neutrino and charged lepton decay modes in baryon decay may also be related to neutrino oscillation parameters. Plausible Ans\"atze for the generation structure of coupling matrices motivate additional relations between physical observables, and yield a satisfactory baryon asymmetry.

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