Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-11-21
Phys.Rev.D75:015006,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
20 pages, 4 figures. Minor corrections, references added
Scientific paper
10.1103/PhysRevD.75.015006
Recently, a more than 2sigma discrepancy has been observed between the well measured inclusive value of Vub and the predicted value of Vub from the unitarity triangle fit using the world average value of sin2beta. We attempt to resolve this tension in the context of grand unified SO(10) and SU(5) models where the neutrino mixing matrix is responsible for flavor changing neutral current at the weak scale and the models with non-proportional A-terms (can be realized simply in the context of intersecting D-brane models) and investigate the interplay between the constraints arising from B_{s,d}-\bar B_{s,d} mixings, epsilon_K, Br(tau -> mu gamma), Br(mu -> e gamma) and a fit of this new discrepancy. We also show that the ongoing measurement of the phase of Bs mixing will be able to identify the grand unified model. The measurement of Br(tau -> e gamma) will also be able to test these scenarios, especially the models with non-proportional A-terms.
Dutta Bhaskar
Mimura Yukihiro
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