TTP97-44 |\Delta F| = 1 Nonleptonic Effective Hamiltonian in a Simpler Scheme

TTP97-44 |\Delta F| = 1 Nonleptonic Effective Hamiltonian in a Simpler Scheme

TTP97-44 |\Delta F| = 1 Nonleptonic Effective Hamiltonian in a Simpler Scheme

We consider |\Delta F| = 1 (F = S,C or B) nonleptonic effective hamiltonian in a renormalization scheme which allows to consistently use fully anticommuting \gamma_5 at any number of loops, but at the leading order in the Fermi coupling G_F. We calculate two-loop anomalous dimensions and one-loop matching conditions for the effective operators in this scheme. Finally, we transform our results to one of the previously used renormalization schemes, and find agreement with the original calculations.

 Konstantin Chetyrkin, Mikolaj Misiak and Manfred Muenz Nucl. Phys. B 520 279-297 1998 PDF PostScript arXiv