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arXiv · 1812.09677

CP violation of quarks in $A_4$ modular invariance

Hiroshi Okada·Morimitsu Tanimoto
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Abstract

We discuss the quark mass matrices in the $A_4$ modular symmetry, where the $A_4$ triplet of Higgs is introduced for each up-quark and down-quark sectors, respectively. The model has six real parameters and two complex parameters in addition to the modulus $τ$. By inputting six quark masses and three CKM mixing angles, we can predict the CP violation phase $δ$ and the Jarlskog invariant $J_{CP}$. The predicted ranges of $δ$ and $J_{CP}$ are consistent with the observed values. The absolute value of $V_{ub}$ is smaller than $0.0043$, while $V_{cb}$ is lager than $0.0436$. In conclusion, our quark mass matrices with the $A_4$ modular symmetry can reproduce the CKM mixing matrix completely with observed quark masses.

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Hiroshi Okada, Morimitsu Tanimoto. 2019-02-19. CP violation of quarks in $A_4$ modular invariance. https://doi.org/10.1016/j.physletb.2019.02.028

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