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17 papers · 2 filters
Generalized Parton Distributions in Full Lattice QCD
M. Göckeler, Ph. Hägler, R. Horsley +5
We present recent results on generalized parton distributions from dynamical lattice QCD calculations. Our set of twelve different combinations of couplings and quark masses allows…
Perturbative Renormalisation of the Second Moment of Generalised Parton Distributions
M. Göckeler, R. Horsley, H. Perlt +4
We calculate the non-forward quark matrix elements of operators with two covariant derivatives needed for the renormalisation of the second moment of generalised parton distributio…
Generalized parton distributions and structure functions from full lattice QCD
M. Göckeler, P. Hägler, R. Horsley +5
We present here the latest results from the QCDSF collaboration for (moments of) structure functions and generalized form factors in full QCD with Nf=2 O(a)-improved Wilson fermion…
Determination of Lambda in quenched and full QCD - an update
M. Göckeler, R. Horsley, A. C. Irving +4
We present an update on our previous determination of the Lambda parameter in QCD. The main emphasis is on results for two flavours of light dynamical quarks, where we can now almo…
A lattice determination of g_A and <x> from overlap fermions
M. Gürtler, R. Horsley, V. Linke +5
We present results for the nucleon's axial charge g_A and the first moment <x> of the unpolarized parton distribution function from a simulation of quenched overlap fermions.
The gluon and ghost propagator and the influence of Gribov copies
A. Sternbeck, E. -M. Ilgenfritz, M. Mueller-Preussker +1
The dependence of the Landau gauge gluon and ghost propagators on the choice of Gribov copies is studied in pure SU(3) lattice gauge theory. Whereas the influence on the gluon prop…