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

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

2006-05-08

arxiv.org/abs/hep-ph/0605084v3

Mod.Phys.Lett.A21:2729-2738,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages including 3 figures

Scientific paper

10.1142/S0217732306021700

We consider effective Lagrangian models of CP-violating vertex structure in which a $b -> uW$ vertex, proportional to $s_{13}e^{-i\delta_{13}}$ with $s_{13}$ very small (milliweak interaction) and $\delta_{13}$ 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 $\bbar \to \phi \KS$. We estimate that this can significantly change the $S$ parameter from the value expected in the standard model.

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