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arXiv · hep-ph/9502297

A Symmetry Pattern of Maximal CP-Violation and a Determination of the Unitarity Triangle

Harald Fritzsch·Zhi-zong Xing
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Abstract

Within a specific texture of the quark mass matrix the notion of a maximal violation of the $CP$ symmetry can be defined. The experimental constraints from weak decays imply that in reality one is close to the case of maximal $CP$ violation, which vanishes as the mass of the $u$--quark approaches zero. The unitarity triangle of the Cabibbo--Kobayashi--Maskawa matrix elements is determined. It is related to the triangle relating the Cabibbo angle to the quark mass ratios in the complex plane. The angle $α$ describing the $CP$ violation in the decay $B_d \rightarrow π^+ π^-$ is close to 90$^{\circ }$.

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Harald Fritzsch, Zhi-zong Xing. 1995-02-14. A Symmetry Pattern of Maximal CP-Violation and a Determination of the Unitarity Triangle. https://doi.org/10.1016/0370-2693(95)00545-v

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