Tree FCNC and non-unitarity of CKM matrix

Abstract

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 $Z^{\prime }$ model and its application to the recent $B_s$ mixing measurements.

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

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Cited by in corpus (6)

• Constraints on the Four-Generation Quark Mixing Matrix from a Fit to Flavor-Physics Data
• New-physics signals of a model with a vector-singlet up-type quark
• Constraining the mixing matrix for Standard Model with four generations: time dependent and semi-leptonic CP asymmetries in $B_d^0$, $B_s$ and $D^0$
• CP asymmetry in the decays B --> (X_s, X_d) mu+ mu- with four generations
• Investigating the sterile neutrino parameters with QLC in 3 + 1 scenario
• CP-Violation phase analysis via non-trivial correlation of quarks and leptons in 3+1 scenario