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

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

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Dimopoulos, P.; Giusti, L.; Hernández Gamazo, Pilar; Palombi, F.; Pena Ruano, Carlos; Vladikas, A.; Wennekers, Jan; Wittig, Hartmut
This document is a artículoDate2006

Este documento está disponible también en : http://hdl.handle.net/10550/43316
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.

    Dimopoulos, P. Giusti, L. Hernández Gamazo, Pilar Palombi, F. Pena Ruano, Carlos Vladikas, A. Wennekers, Jan Wittig, Hartmut 2006 Non-perturbative renormalisation of left left four-fermion operators with Neuberger fermions Physics Letters B 641 1 118 124
http://dx.doi.org/10.1016/j.physletb.2006.08.009

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