Tree FCNC and non-unitarity of CKM matrix

Details Tree FCNC and non-unitarity of CKM matrix Tree FCNC and non-unitarity of CKM matrix

2007-10-09

arxiv.org/abs/0710.1681v2

Int.J.Mod.Phys.E16:1445-1461,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk given at Neutrino Masses and Mixings 2006 (NMM2006), Shizuoka, Japan (December 2006)

Scientific paper

10.1142/S0218301307006800

We discuss possible signatures of the tree level FCNC, which results from the non-unitarity of CKM matrix. We first define the unitaity step-by-step, and possible test of the non-unitaity through the 4-value-KM parametrization. We, then, show how the phase angle of the unitary triangle would change in case of the vector-like down quark model. As another example of tree FCNC, we investigate the leptophobic $Z'$ model and its application to the recent $B_s$ mixing measurements.

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