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A vertex-structure model for new direct CP-violating effects in Bbar^0(B^0) -> phi K_S and in B^-+ -> pi^-+ eta' (eta)

Saul Barshay·Georg Kreyerhoff
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Abstract

We consider effective Lagrangian models of CP-violating vertex structure in which a $b -> uW$ vertex, proportional to $s_{13}e^{-iδ_{13}}$ with $s_{13}$ very small (milliweak interaction) and $δ_{13}$ large, is dynamically generated. A consequent, enhanced CP-violating vertex for $b\to sg$ results in an enhanced CP-violating phase in the ratio of amplitudes for $\bbar \to ϕ\KS$. We estimate that this can significantly change the $S$ parameter from the value expected in the standard model.

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Saul Barshay, Georg Kreyerhoff. 2006-07-03. A vertex-structure model for new direct CP-violating effects in Bbar^0(B^0) -> phi K_S and in B^-+ -> pi^-+ eta' (eta). https://doi.org/10.1142/s0217732306021700

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