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

Abstract

The nonperturbative content of the QCD vacuum permits the occurrence of QCD-vaccum condensate contributions to penguin amplitudes. We calculate the dimension-4 $<m_q\bar{q}q>$ 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.

Comments: 7 pages, latex uses aipproc, 3 postscript figures included, Talk given at 21st Annual MRST Conference: High Energy Physics at the Millenium (MRST 99 and the Sundarfest), Ottawa, Ontario, Canada, 10-12 May 1999