Publications (18)
Improving meson two-point functions by low-mode averaging
T. DeGrand, S. Schaefer
Some meson correlation functions have a large contribution from the low lying eigenmodes of the Dirac operator. The contribution of these eigenmodes can be averaged over all positi…
Impact of Higher Order and Soft Gluon Corrections on the Extraction of Higher Twist Effects in DIS
S. Schaefer, A. Schäfer, M. Stratmann
The impact of recently calculated next-to-next-to-leading order QCD corrections and soft gluon resummations on the extraction of higher twist contributions to the deep-inelastic st…
Applied lattice gauge calculations: diquark content of the nucleon
M. Göckeler, R. Horsley, B. Klaus +5
As an example of an application of lattice QCD we describe a computation of four-quark operators in the nucleon. The results are interpreted in a diquark language.
Diffractive charged meson pair production
B. Lehmann-Dronke, M. Maul, S. Schaefer +2
We investigate the possibility to measure the nonforward gluon distribution function by means of diffractively produced Ï^+Ï^- and K^+K^- pairs in polarized lepton nucleon scatte…
A lattice study of the spin structure of the Lambda hyperon
M. Göckeler, R. Horsley, D. Pleiter +4
The internal spin structure of the Lambda is of special importance for the understanding of the spin structure of hadrons in general. The comparison between the nucleon and Lambda…
The spin structure of the Lambda hyperon in quenched lattice QCD
M. Göckeler, R. Horsley, D. Pleiter +4
It has been suggested to use the production of Lambda hyperons for investigating the nucleon spin structure. The viability of this idea depends crucially on the spin structure of t…