Flavor structure with multi moduli in 5D supergravity

Details Flavor structure with multi moduli in 5D supergravity Flavor structure with multi moduli in 5D supergravity

2008-07-23

arxiv.org/abs/0807.3725v2

Phys.Rev.D79:045005,2009

Physics

High Energy Physics

High Energy Physics - Theory

30 pages, 2 figures; version to be published in PRD

Scientific paper

10.1103/PhysRevD.79.045005

We study 5-dimensional supergravity on S^1/Z_2 with a physical Z_2-odd vector multiplet, which yields an additional modulus other than the radion. We derive 4-dimensional effective theory and find additional terms in the Kahler potential that are peculiar to the multi moduli case. Such terms can avoid tachyonic soft scalar masses at tree-level, which are problematic in the single modulus case. We also show that the flavor structure of the soft terms are different from that in the single modulus case when hierarchical Yukawa couplings are generated by wavefunction localization in the fifth dimension. We present a concrete model that stabilizes the moduli at a supersymmetry breaking Minkowski minimum, and show the low energy sparticle spectrum.

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