10 papers · 1 filter
Transverse momentum distributions of quarks in the nucleon from Lattice QCD
Bernhard U. Musch, Philipp Hägler, Andreas Schäfer +3
Transverse momentum dependent parton distribution functions (TMDPDFs) encode information about the intrinsic motion of quarks inside the nucleon. They are important non-perturbativ…
Nucleon distribution amplitudes from lattice QCD
Meinulf Göckeler, Roger Horsley, Thomas Kaltenbrunner +8
We calculate low moments of the leading-twist and next-to-leading twist nucleon distribution amplitudes on the lattice using two flavors of clover fermions. The results are present…
Irreducible Multiplets of Three-Quark Operators on the Lattice: Controlling Mixing under Renormalization
Thomas Kaltenbrunner, Meinulf Göckeler, Andreas Schäfer
High luminosity accelerators have greatly increased the interest in semi-exclusive and exclusive reactions involving nucleons. The relevant theoretical information is contained in…
Probing the chiral limit with clover fermions II: The baryon sector
M. Göckeler, Philipp Hägler, R. Horsley +9
Algorithmic progress in recent years made it possible to simulate QCD with Nf=2 flavours of O(a)-improved Wilson fermions at very light quark masses. We present the current results…
Distribution Amplitudes of Vector Mesons
V. M. Braun, D. Brömmel, M. Göckeler +12
Results are presented for the lowest moment of the distribution amplitude for the K-star vector meson. Both longitudinal and transverse moments are investigated. We use two flavour…
Smearing and filtering methods in lattice QCD - a quantitative comparison
Stefan Solbrig, Falk Bruckmann, Christof Gattringer +3
We systematically compare three filtering methods used to extract topological excitations from lattice gauge configurations, namely smearing, Laplace filtering and the filtered fer…