Abstract
Strong-interaction corrections to the nonleptonic weak-interaction Hamiltonian are calculated in the leading-logarithmic approximation using quantum chromodynamics. Starting with a six-quark theory, the boson, quark, quark, and quark are successively considered as "heavy" and the effective Hamiltonian calculated. The resulting effective Hamiltonian for strangeness-changing nonleptonic decays involves , , and quarks and has possible -violating pieces both in the usual terms and in induced, "penguin"-type terms. Numerically, the -violating compared to -conserving parts of the latter terms are close to results calculated on the basis of the lowest-order "penguin" diagram.
- Received 18 June 1979
DOI:https://doi.org/10.1103/PhysRevD.20.2392
©1979 American Physical Society