Two loop mixing of dimension five flavor changing operators

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 → X s γ decay rate.

electroweak interaction
operator: flavor changing
dimension: 5
quantum chromodynamics: correction
operator: interference
operator: magnetic moment
magnetic moment: operator
bottom
quark: radiative decay
radiative decay: quark

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