229 citations · 6.9k across the 257 of their papers we have counts for
13 papers · 1 filter
On-shell and off-shell improvement for Ginsparg-Wilson fermions
S. Capitani, M. Goeckeler, R. Horsley +2
We discuss the improvement of bilinear fermionic operators for Ginsparg-Wilson fermions. We present explicit formulae for improved Green's functions, which apply both on-shell and…
Hadron masses and decay constants in quenched QCD
M. Goeckeler, R. Horsley, D. Petters +4
We present results for the mass spectrum and decay constants using non-perturbatively O(a) improved Wilson fermions. Three values of and 30 different quark masses are used to o…
The Polarized Structure Function g_2: A Lattice Study Revisited
M. Göckeler, R. Horsley, W. Kürzinger +3
A recent lattice calculation of the spin-dependent structure function g_2 is revisited. It has been recognized that the twist-three operator, which gives rise to d_2, mixes non-per…
Beyond the Thouless energy
M. E. Berbenni-Bitsch, M. Göckeler, H. Hehl +4
The distribution and the correlations of the small eigenvalues of the Dirac operator are described by random matrix theory (RMT) up to the Thouless energy ,…
Higher-twist contributions to the Structure Functions coming from 4-fermion operators
S. Capitani, M. Göckeler, R. Horsley +5
We evaluate the contribution of a class of higher-twist operators to the lowest moment of the Structure Functions, by computing appropriate matrix elements of six four-fermion oper…
Operator improvement for Ginsparg-Wilson fermions
S. Capitani, M. Goeckeler, R. Horsley +2
The improvement of fermionic operators for Ginsparg-Wilson fermions is investigated. We present explicit formulae for improved Green's functions, which apply both on-shell and off-…
Light quark masses from the lattice
M. Gockeler, R. Horsley, B. Klaus +7
A completely non-perturbative estimate is given for the u/d and strange quark masses in quenched QCD using O(a) improved fermions and, for comparison, Wilson fermions. For improved…
A Lattice Determination of Light Quark Masses
M. Gockeler, R. Horsley, H. Oelrich +5
A fully non-perturbative lattice determination of the up/down and strange quark masses is given for quenched QCD using both, improved Wilson fermions and ordinary Wilson fer…
Higher-Twist Contribution to Pion Structure Function: 4-Fermi Operators
S. Capitani, M. Göckeler, R. Horsley +5
We present quenched lattice QCD results for the contribution of higher-twist operators to the lowest non-trivial moment of the pion structure function. To be specific, we consider…
Random Matrix Theory, Chiral Perturbation Theory, and Lattice Data
M. E. Berbenni-Bitsch, M. Göckeler, H. Hehl +4
Recently, the chiral logarithms predicted by quenched chiral perturbation theory have been extracted from lattice calculations of hadron masses. We argue that the deviations of lat…
Higher-twist corrections to nucleon structure functions from lattice QCD
S. Capitani, M. Göckeler, R. Horsley +4
A genuinely non-perturbative evaluation of higher-twist contributions to the structure functions of the nucleon, with all mixing effects and renormalon ambiguities taken care of, i…
Towards a lattice calculation of and
S. Capitani, M. Gockeler, R. Horsley +7
Within the framework of lattice QCD a high statistics computation of the nucleon axial and tensor charges is given. Particular attention is paid to the chiral and continuum extrapo…
Random Matrix Theory and Chiral Logarithms
M. E. Berbenni-Bitsch, M. Göckeler, H. Hehl +4
Recently, the contributions of chiral logarithms predicted by quenched chiral perturbation theory have been extracted from lattice calculations of hadron masses. We argue that a de…