CP Violation and Flavour Mixings in Orbifold GUTs

Details CP Violation and Flavour Mixings in Orbifold GUTs CP Violation and Flavour Mixings in Orbifold GUTs

2007-09-12

arxiv.org/abs/0709.1848v2

Phys.Rev.D77:011901,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, no figures; v2: minor changes, published in Phys Rev D (Rapid Communication)

Scientific paper

10.1103/PhysRevD.77.011901

We address the flavour problem by incorporating the hypothesis of universal strength of Yukawa couplings in the framework of a 5D GUT model compactified on an $S^1/(Z_2 \times Z_2^{\prime})$ orbifold. We show that a quantitatively successful picture of fermion masses and mixings emerges from the interplay between the bulk suppression factors of geometric origin and the phases of the Yukawa matrices. We give an explicit example, where we obtain a good fit for both the CKM and PMNS matrices.

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