Three-loop mixing of dipole operators.
We calculate the complete three-loop O(alpha(3)(s)) anomalous dimension matrix for the dimension-five dipole operators that arise in the standard model after integrating out the top quark and the heavy electroweak bosons. Our computation completes the three-loop anomalous dimension matrix of operators that govern low-energy |DeltaF| = 1 flavor-changing processes, and represents an important ingredient of the next-to-next-to-leading order QCD analysis of the B--> X(s)gamma decay.
Gorbahn
Martin
M
IPPP, Physics Department, University of Durham, UK.
Haisch
Ulrich
U
Misiak
Mikołaj
M