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arxiv: hep-ph/9908375 · v1 · submitted 1999-08-17 · ✦ hep-ph

Quark- and Gluon-Condensate Contributions to Penguin Four-Fermi Operators

classification ✦ hep-ph
keywords contributionspenguinfour-fermioperatorsalphaamplitudescalculatecoefficients
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The nonperturbative content of the QCD vacuum permits the occurrence of QCD-vaccum condensate contributions to penguin amplitudes. We calculate the dimension-4 $<m_q\bar qq>$ and $<\alpha_s G^2>$ contributions to the effective Wilson coefficients for penguin four-Fermi operators, and discuss how such contributions may contribute to nonleptonic B decays.

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