Modification of the Unitarity Relation for sin2beta-Vub in Supersymmetric Models

Abstract

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.

20 pages, 4 figures. Minor corrections, references added

References in corpus (8)

• Hints of large tan(beta) in flavour physics
• Direct Limits on the Bs Oscillation Frequency
• Probing New Physics through B Mixing: Status, Benchmarks and Prospects
• Constraints on new physics from the quark mixing unitarity triangle
• |V_ub| from UTangles and B->pi l nu
• Minimal Flavour Violation Waiting for Precise Measurements of Delta M_s, S_{psi phi}, A^s_SL, |V_ub|, gamma and B^0_{s,d} -> mu+ mu-
• B(s)-B(s)bar Mixing in Supersymmetric Grand Unified Models
• Supersymmetric contribution to the CP asymmetry of B-> J/ψϕin the light of recent B_s -\bar{B}_s measurements

Cited by in corpus (8)

• Proton Decay and Flavor Violating Thresholds in SO(10) Models
• Complex CKM matrix, spontaneous CP violation and generalized $\mu$-$\tau$ symmetry
• Large Phase of B_s-\bar B_s Mixing in Supersymmetric Grand Unified Theories
• Penguin Contribution to the Phase of B_s-\bar B_s Mixing and B_s -> mu mu in Grand Unified Theories
• Constraint from D - anti-D Mixing in Left-Right Symmetric Models
• Minimal flavour violations and tree level FCNC
• Correlation between direct dark matter detection and Br(B_s -> mu mu) with a large phase of B_s - anti-B_s mixing
• Enhancement of Br(B_d -> mu^+mu^-)/Br(B_s -> mu^+mu^-) in Supersymmetric Unified Models