New Bounds on the String Scale from Flavor Physics

Details New Bounds on the String Scale from Flavor Physics New Bounds on the String Scale from Flavor Physics

2004-06-22

arxiv.org/abs/hep-ph/0406239v1

Mod.Phys.Lett.A19:497-509,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

Invited review, published version

Scientific paper

10.1142/S0217732304014008

We review the very stringent lower bounds on the string scale that arise from flavor considerations in models with intersecting branes. Despite the absence of a realistic flavor structure at tree level, flavor changing interactions induce a non-trivial pattern of fermion masses and mixing angles when quantum corrections are taken into account. The resulting realistic theory of flavor allows us to constrain, in an unambiguous way, the string scale up to levels difficult to reconcile non-supersymmetric models.

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