paper

Wolfenstein Parametrization at Higher Order: Seeming Discrepancies and Their Resolution

arXiv:1106.0935 · doi:10.1016/j.physletb.2011.08.047

Abstract

In different Wolfenstein parametrizations derived from different exact parametrizations of the Cabibbo-Kobayashi-Maskawa matrix, we explicitly study seeming discrepancies between the matrix elements at the higher order of the expansion parameter . A systematic way of resolving the seeming discrepancies is proposed. We find that most of the discrepancies can be naturally resolved by a proper redefinition of the numerically small (of order ) parameters. Our approach is further applied to the cases for the Wolfenstein-{\it like} parametrizations, such as the Qin-Ma parametrization.

5 pages, two paragraphs added to explain the motivation for considering various Wolfenstein-like parametrizations; version to appear in PLB

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