6533b82bfe1ef96bd128d618

RESEARCH PRODUCT

Non-perturbative renormalisation of left left four-fermion operators with Neuberger fermions

Jan WennekersPilar HernándezCarlos PenaA. VladikasPetros DimopoulosLeonardo GiustiFilippo PalombiHartmut Wittig

subject

QuarkPhysicsNuclear and High Energy PhysicsParticle physicsHigh Energy Physics::LatticeHigh Energy Physics - Lattice (hep-lat)field theory gauge theory lattice renormalizationHigh Energy Physics::PhenomenologyFOS: Physical sciencesFísicaParticle Physics - LatticeFermionComposite operatorRenormalizationFIS/02 - FISICA TEORICA MODELLI E METODI MATEMATICIHigh Energy Physics - LatticeOperator (computer programming)High Energy Physics::ExperimentNon-perturbativeMathematical physics

description

We outline a general strategy for the non-perturbative renormalisation of composite operators in discretisations based on Neuberger fermions, via a matching to results obtained with Wilson-type fermions. As an application, we consider the renormalisation of the four-quark operators entering the Delta S=1 and Delta S=2 effective Hamiltonians. Our results are an essential ingredient for the determination of the low-energy constants governing non-leptonic kaon decays.

yearjournalcountryeditionlanguage
2006-07-20
10.1016/j.physletb.2006.08.009http://hdl.handle.net/10550/43316