Title
Unitarity triangle angles explained: a predictive new quark mass matrix texture

Abstract:
We propose a novel quark mass matrix texture-pair with five free parameters, which fits the four quark mass ratios 
ms/mb, md/mb, mc/mt, mu/mt, and the four CKM quark mixing observables. The matrices each have one texture zero, 
but the main innovation here is a "geometric" ansatz exploiting a pair of small complex expansion parameters, based on the 
geometry of the Unitarity Triangle. The fit to the observables is in good agreement with current experimental values 
renormalised to ~10^4 TeV, and offers decisive tests against future high-precision measurements of the unitarity triangle 
angles at the weak scale. We identify two novel symmetries of these mass matrices which explain the 
phenomenologically-successful relations alpha=pi/2 and beta=pi/8.