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- Freie Universität BerlinDE51 papers
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5 papers · 2 filters
Transverse spin structure of the nucleon from lattice QCD simulations
M. Göckeler, Ph. Hägler, R. Horsley +7
We present the first calculation in lattice QCD of the lowest two moments of transverse spin densities of quarks in the nucleon. They encode correlations between quark spin and orb…
Probing Nucleon Structure on the Lattice
M. Göckeler, Ph. Hägler, R. Horsley +8
The QCDSF/UKQCD collaboration has an ongoing program to calculate nucleon matrix elements with two flavours of dynamical O(a) improved Wilson fermions. Here we present recent resul…
The pion form factor from lattice QCD with two dynamical flavours
D. Brömmel, M. Diehl, M. Göckeler +9
We compute the electromagnetic form factor of the pion using non-perturbatively O(a) improved Wilson fermions. The calculations are done for a wide range of pion masses and lattice…
Moments of pseudoscalar meson distribution amplitudes from the lattice
V. M. Braun, M. Göckeler, R. Horsley +8
Based on lattice simulations with two flavours of dynamical, O(a)-improved Wilson fermions we present results for the first two moments of the distribution amplitudes of pseudoscal…
Determining the strange quark mass for 2-flavour QCD
M. Göckeler, R. Horsley, A. C. Irving +5
Using the O(a) Symanzik improved action an estimate is given for the strange quark mass for unquenched (n_f=2) QCD. The determination is via the axial Ward identity (AWI) and inclu…