Quark- and Gluon-Condensate Contributions to Penguin Four-Fermi Operators
Mohammad R. Ahmady, Victor Elias (Univ. of Western Ontario)
TL;DR
This paper calculates nonperturbative QCD vacuum condensate contributions to penguin operators, impacting the understanding of nonleptonic B decays through effective Wilson coefficients.
Contribution
It provides the first calculation of dimension-4 condensate contributions to penguin four-Fermi operators affecting B decay analyses.
Findings
Dimension-4 condensate contributions are significant in penguin amplitudes.
Results influence the theoretical modeling of nonleptonic B decays.
The work enhances understanding of nonperturbative QCD effects in weak decays.
Abstract
The nonperturbative content of the QCD vacuum permits the occurrence of QCD-vaccum condensate contributions to penguin amplitudes. We calculate the dimension-4 and 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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