Remarks on flavour mixings from orbifold compactification

Details Remarks on flavour mixings from orbifold compactification Remarks on flavour mixings from orbifold compactification

2005-11-23

arxiv.org/abs/hep-ph/0511276v1

J.Phys. G32 (2006) B1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, Latex

Scientific paper

10.1088/0954-3899/32/1/B01

We consider 5d SU(5) GUT models based on the orbifold $S^1/(Z_2 \times Z_2')$, and study the different possibilities of placing the SU(5) matter multiplets in three possible locations, namely, the two branes at the two orbifold fixed points and SU(5) bulk. We demonstrate that if flavour hierarchies originate solely from geometrical suppressions due to wavefunction normalisation of fields propagating in the bulk, then it is not possible to satisfy even the gross qualitative behaviour of the CKM and MNS matrices regardless of where we place the matter multiplets.

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