14.2k citations
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8 papers · 2 filters
Results from a Non-Perturbative Renormalization of Lattice Operators
G. Martinelli, C. Pittori, C. T. Sachrajda +2
We propose a general renormalization method, which avoids completely the use of lattice perturbation theory. We present the results from its numerical applications to two-fermion o…
Universal behaviour of the SU(2) running coupling constant in the continuum limit
Marco Guagnelli
We present data from the ALPHA Collaboration about lattice calculation of SU(2) pure--gauge running coupling constant, obtained with two different definitions of the coupling itsel…
Universality and the approach to the continuum limit in lattice gauge theory
G. de Divitiis, R. Frezzotti, M. Guagnelli +5
The universality of the continuum limit and the applicability of renormalized perturbation theory are tested in the SU(2) lattice gauge theory by computing two different non-pertur…
Lattice Calculation of D- and B-meson Semileptonic Decays, using the Clover Action at beta=6.0 on APE
C. R. Allton, M. Crisafulli, V. Lubicz +14
We present the results of a high statistics lattice calculation of hadronic form factors relevant for and meson semi-leptonic decays into light pseudoscalar and vector mes…
A General Method for Non-Perturbative Renormalization of Lattice Operators
G. Martinelli, C. Pittori, C. T. Sachrajda +2
We propose a non-perturbative method for computing the renormalization constants of generic composite operators. This method is intended to reduce some systematic errors, which are…
Gribov Noise on the Lattice Axial Current Renormalisation Constant
Maria Luigia Paciello, Silvano Petrarca, Bruno Taglienti +1
We study the influence of Gribov copies, in the Landau gauge, on the lattice renormalisation constant of the axial current, obtained from a Ward identity on quark state correlation…
Non perturbative determination of the running coupling constant in quenched SU(2)
G. M. de Divitiis, R. Frezzotti, M. Guagnelli +1
Through a finite size renormalization group technique we calculate the running coupling constant for quenched SU(2) with a few percent error over a range of energy varying by a fac…
Deep Inelastic Scattering in Improved Lattice QCD. I. The first moment of structure functions
Stefano Capitani, Giancarlo Rossi
We present the complete 1-loop perturbative computation of the renormalization constants and mixing coefficients of the operators that measure the first moment of deep inelastic sc…