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arXiv · 2207.14235

Do the Small Numbers in the Quark Mixing arise from New Physics?

G. C. Branco·José Filipe Bastos·J. I. Silva-Marcos
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Abstract

We put forward the conjecture that the small numbers in the $V_\text{CKM}$ matrix, are generated by physics beyond the Standard Model. We identify as small numbers $V_{ub}$ and the strength of CP violation, measured by $|\text{Im}Q|$, where $Q$ stands for a rephasing invariant quartet of $V_\text{CKM}$. We illustrate how the conjecture can be realised in the context of an extension of the Standard Model where an up-type vector-like quark is introduced leading to a realistic spectrum of quark masses and an effective $V_\text{CKM}$ in agreement with experiment.

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G. C. Branco, José Filipe Bastos, J. I. Silva-Marcos. 2022-07-28. Do the Small Numbers in the Quark Mixing arise from New Physics?. https://doi.org/10.1140/epjc%2Fs10052-023-11279-3

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