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arXiv · hep-ph/9409454

Two-loop mixing of dimension-five flavor-changing operators

M. Misiak·M. Muenz
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Abstract

We calculate the two-loop QCD mixing of the dimension-five flavor-changing operators that arise in the Standard Model after integrating out the $W$, $Z$ and Higgs bosons and the top-quark, i.e.~the mixing among gluonic and photonic magnetic moment operators. Our calculation completes the two-loop anomalous dimension matrix of operators that govern low energy flavor-changing processes. It is an important ingredient of the next-to-leading calculation of the $B \rightarrow X_s γ$ decay rate.

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M. Misiak, M. Muenz. 1994-10-17. Two-loop mixing of dimension-five flavor-changing operators. https://doi.org/10.1016/0370-2693(94)01553-o

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