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., Hernandez, P., Palombi, F., Pena, C., Vladikasa, A., et al. (2006). Non-perturbative renormalisation of left-left four-fermion operators with Neuberger fermions. PHYSICS LETTERS. SECTION B, 641(1), 118-124 [10.1016/j.physletb.2006.08.009].

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

GIUSTI, LEONARDO;
2006

Abstract

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.
Articolo in rivista - Articolo scientifico
field theory, gauge theory, lattice, renormalization
English
2006
641
1
118
124
none
Dimopoulos, P., Giusti, L., Hernandez, P., Palombi, F., Pena, C., Vladikasa, A., et al. (2006). Non-perturbative renormalisation of left-left four-fermion operators with Neuberger fermions. PHYSICS LETTERS. SECTION B, 641(1), 118-124 [10.1016/j.physletb.2006.08.009].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/24691
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