Non-perturbative renormalization constants on the lattice from flavour non-singlet Ward identities

Details Non-perturbative renormalization constants on the lattice from flavour non-singlet Ward identities Non-perturbative renormalization constants on the lattice from flavour non-singlet Ward identities

1997-10-20

arxiv.org/abs/hep-lat/9710071v1

Phys.Lett. B419 (1998) 311-316

Physics

High Energy Physics

High Energy Physics - Lattice

9 pages, latex file + 4 eps files of figures

Scientific paper

10.1016/S0370-2693(97)01444-5

By imposing axial and vector Ward identities for flavour-non-singlet currents, we estimate in the quenched approximation the non-perturbative values of combinations of improvement coefficients, which appear in the expansion around the massless case of the renormalization constants of axial, pseudoscalar, vector, scalar non-singlet currents and of the renormalized mass. These coefficients are relevant for the completion of the improvement programme to O(a) of such operators. The simulations are performed with a clover Wilson action non-perturbatively improved.

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