B(s)-B(s)bar Mixing in Supersymmetric Grand Unified Models

Details B(s)-B(s)bar Mixing in Supersymmetric Grand Unified Models B(s)-B(s)bar Mixing in Supersymmetric Grand Unified Models

2006-07-12

arxiv.org/abs/hep-ph/0607147v2

Phys.Rev.Lett.97:241802,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 3 figures. Modifications in the text and the title, references added, results unchanged, to appear in PRL

Scientific paper

10.1103/PhysRevLett.97.241802

We study B_s-\bar{B}_s mixing in grand unified SO(10), SU(5) models where the mixings among the second and third generation squarks arise due to the existence of flavor violating sources in the Dirac and Majorana couplings which are responsible for neutrino mixings. We find that when the branching ratio of tau->mu gamma decay is enhanced to be around the current experimental bound, B_s-\bar{B}_s mixing may also contain large contribution from supersymmetry in the SO(10) boundary condition. Consequently, the phase of B_s-\bar{B}_s mixing is large (especially for small tan beta and large scalar mass m_0) and can be tested by measuring CP asymmetries of B_s decay modes.

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