Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-11-23
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.
Bhattacharyya Gautam
Raychaudhuri Amitava
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