Abstract

Leading logarithmic contributions to the effective | ΔS| = 1, |ΔT| = 1 2 weak lagrangian are calculated at the two-loop level. The terms of the kind α S 2ln 2 m W, α S 2ln m Wln m c, α S 2ln 2 m c are taken into account. The results agree with those obtained in refs. [2,3] by the renormalization group technique and disagree with the statement of refs. [4,5]. The cause of the disagreement is exposed.

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