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2011

Remarks on the Qin-Ma Parametrization of Quark Mixing Matrix

Ahn, Y. H., Cheng, Hai-Yang, Oh, Sechul

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Recently, Qin and Ma (QM) have advocated a new Wolfenstein-like parametrization of the quark mixing matrix based on the triminimal expansion of the Cabibbo-Kobayashi-Maskawa (CKM) parametrization.

The CP-odd phase in the QM parametrization is around $90^\circ$ just as that in the CKM parametrization.
We point out that the QM parametrization can be readily obtained from the Wolfenstein parametrization after appropriate phase redefinition for quark fields and that the phase $\delta$ in both QM and CKM parametrizations is related to the unitarity angles $\alpha$, $\beta$ and $\gamma$, namely, $\delta= \beta+\gamma$ or $\pi-\alpha$.
We show that both QM and Wolfenstein parametrizations can be deduced from the CKM and Chau-Keung-Maiani ones.

Remarks on the Qin-Ma Parametrization of Quark Mixing Matrix · Around

Built on

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1973
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C. Jarlskog, Phys. Rev. Lett
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