Triminimal Parametrization of Quark Mixing Matrix

Understand

Starting from a new zeroth order basis for quark mixing (CKM) matrix based on the quark-lepton complementarity and the tri-bimaximal pattern of lepton mixing, we derive a triminimal parametrization of CKM matrix with three small angles and a CP-violating phase as its parameters.

• This new triminimal parametrization has the merits of fast convergence and simplicity in application.
• With the quark-lepton complementary relations, we derive relations between the two unified triminimal parametrizations for quark mixing obtained in this work and for lepton mixing obtained by Pakvasa-Rodejohann-Weiler.
• Parametrization deviating from quark-lepton complementarity is also discussed.