English

Three-Loop Mixing of Dipole Operators

High Energy Physics - Phenomenology 2008-11-26 v2

Abstract

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.

Keywords

Cite

@article{arxiv.hep-ph/0504194,
  title  = {Three-Loop Mixing of Dipole Operators},
  author = {Martin Gorbahn and Ulrich Haisch and Mikolaj Misiak},
  journal= {arXiv preprint arXiv:hep-ph/0504194},
  year   = {2008}
}

Comments

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

R2 v1 2026-07-22T14:01:33.122Z