A second look at masses and mixings of quarks and leptons

The masses of quarks and leptons in units of mt are expressed in powers of δ = mcmc. The regularities found suggest specific mass matrices. They reproduce all masses and mixings in striking agreement with observation. A 90° 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 γ of the unitary triangle, to γ ⋍ 90°.