Non-perturbative scale evolution of four-fermion operators

Abstract

We apply the Schroedinger Functional (SF) formalism to determine the renormalisation group running of four-fermion operators which appear in the effective weak Hamiltonian of the Standard Model. Our calculations are done using Wilson fermions and the parity-odd components of the operators. Preliminary results are presented for the operator $O_{VA}=(\bar{s}{\gamma }_{\mu }d)(\bar{s}{\gamma }_{\mu }{\gamma }_{5}d)$.

Lattice2002(improve)

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