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arXiv · 0710.1681

Tree FCNC and non-unitarity of CKM matrix

C. S. Kim·Amol Dighe
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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 $Z'$ model and its application to the recent $B_s$ mixing measurements.

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C. S. Kim, Amol Dighe. 2007-12-19. Tree FCNC and non-unitarity of CKM matrix. https://doi.org/10.1142/s0218301307006800

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