CP Violating Lepton Asymmetry from B Decays in Supersymmetric Grand Unified Theories

Details CP Violating Lepton Asymmetry from B Decays in Supersymmetric Grand Unified Theories CP Violating Lepton Asymmetry from B Decays in Supersymmetric Grand Unified Theories

2010-07-21

arxiv.org/abs/1007.3696v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages, 5 figures

Scientific paper

We investigate the effect of the dimuon CP asymmetry from the B decay modes, recently observed at 3.2 sigma deviation from the Standard Model (SM) by the D0 collaboration, in the context of SU(5) and SO(10) GUT models. We exhibit that a large amount of flavor violation between the second and the third generation is generated due to the large neutrino atmospheric mixing angle and this flavor violation can be responsible for the observed large CP asymmetry due to the presence of new phases (not present in the CKM matrix) in the Yukawa couplings. We also study the implication of the parameter space in these GUT models with large CP violating lepton asymmetry for different phenomenologies, e.g., Br(tau -> mu + gamma), Br(B_s -> mu + mu) at the Fermilab, direct detection of dark matter (DM) in the ongoing detectors and measurement of muon flux from solar neutrinos at the IceCube experiment.

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