A Second Look at Masses and Mixings of Quarks and Leptons

Abstract

The masses of quarks and leptons in units of $m_t$ are expressed in powers of $\sigma =\sqrt{m_c/m_t}$. The regularities found suggest specific mass matrices. They reproduce all masses and mixings in striking agreement with observation. A 90 degree relative phase angle between the off-diagonal elements of up and down quark matrices leads to a maximum magnitude for CP-violation and, for the phase angle $\gamma$ of the unitary triangle, to $\gamma \simeq 90^o$.

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