A VERTEX-STRUCTURE MODEL FOR NEW DIRECT CP-VIOLATING EFFECTS IN $\bar B^0(B^0)\to\phi K_{\rm S}$ AND IN B∓→π∓η′(η)

Abstract

We consider effective Lagrangian models of CP-violating vertex structure in which a b→uW vertex, proportional to s13e-iδ13 with s13 very small (milliweak interaction) and δ13 large, is dynamically generated. A consequent, enhanced CP-violating vertex for b→sg results in an enhanced CP-violating phase in the ratio of amplitudes for [Formula: see text]. We estimate that this can significantly change the S-parameter from the value expected in the standard model.