Three-Loop Mixing of Dipole Operators

Details Three-Loop Mixing of Dipole Operators Three-Loop Mixing of Dipole Operators

2005-04-21

arxiv.org/abs/hep-ph/0504194v2

Phys.Rev.Lett.95:102004,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 1 figure; journal version, text below Eq. (7) corrected

Scientific paper

10.1103/PhysRevLett.95.102004

We calculate the complete three-loop O(alpha_s^3) 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 |Delta F| = 1 flavor-changing processes, and represents an important ingredient of the next-to-next-to-leading order QCD analysis of the Bbar -> X_s gamma decay.

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