Abstract
New constributions to the K L→π 0e +e − amplitude are presented. Short-distance penguin induced diagrams for the s→dγ ∗ transition supplement the previously considered electromagnetic penguin. The new CP-violating amplitude corresponds to a new piece of the relevant anomalous dimension matrix. Strong interaction corrections to the new part of the effective hamiltonian are calculated in the leading logarithmic approximation. The role of subleading terms is also discussed.
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