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(2019): Precision measurements of the QCD coupling
David d'Enterria, Stefan Kluth, S. Alekhin +50
This document collects a written summary of all contributions presented at the workshop "(2019): Precision measurements of the strong coupling" held at ECT* (Trento) in Feb. 1…
Electroproduction of the N*(1535) resonance at large momentum transfer
V. M. Braun, M. Göckeler, R. Horsley +11
We report on the first lattice calculation of light-cone distribution amplitudes of the N*(1535) resonance, which are used to calculate the transition form factors at large momentu…
Soffer Bound and Transverse Spin Densities from Lattice QCD
M. Diehl, M. Gockeler, Ph. Hagler +6
Generalized transversity distributions encode essential information on the internal structure of hadrons related to transversely polarized quarks. Lattice QCD allows us to compute…
A Determination of the Lambda Parameter from Full Lattice QCD
M. Göckeler, R. Horsley, A. C. Irving +4
We present a determination of the QCD parameter Lambda in the quenched approximation (n_f=0) and for two flavours (n_f=2) of light dynamical quarks. The calculations are performed…
A lattice determination of moments of unpolarised nucleon structure functions using improved Wilson fermions
M. Göckeler, R. Horsley, D. Pleiter +2
Within the framework of quenched lattice QCD and using O(a) improved Wilson fermions and non-perturbative renormalisation, a high statistics computation of low moments of the unpol…
Determination of Light and Strange Quark Masses from Full Lattice QCD
M. Göckeler, R. Horsley, A. C. Irving +4
We compute the light and strange quark masses m_l = (m_u+m_d)/2 and m_s, respectively, in full lattice QCD with N_f=2 flavors of light dynamical quarks. The renormalization constan…
Structure of the Nucleon
M. Göckeler, T. R. Hemmert, R. Horsley +5
Generalized parton distributions provide information on the longitudinal and transverse distribution of partons in the fast moving nucleon. Furthermore, they contain information on…
Generalized Parton Distributions from Lattice QCD
M. Göckeler, R. Horsley, D. Pleiter +4
We perform a quenched lattice calculation of the first moment of twist-two generalized parton distribution functions of the proton, and assess the total quark (spin and orbital ang…
Nucleon form factors and structure functions from Lattice QCD
M. Göckeler, R. Horsley, D. Pleiter +2
In this talk we highlight recent lattice calculations of the nucleon form factors and structure functions.
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…
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…
Spin Structure Functions from Lattice QCD
M. Göckeler, R. Horsley, H. Perlt +4
We report on new results of the spin dependent structure functions and of the nucleon. An attempt is made to convert the moments, which is what one computes on the latt…
A lattice determination of the second moment of the polarised valence quark distribution
M. Goeckeler, R. Horsley, L. Mankiewicz +4
We perform a Monte Carlo calculation of the second moment of the polarised valence quark distributions in the nucleon, using quenched Wilson fermions. The special feature of this m…
Hadron Structure Functions from Lattice QCD -- 1997
C. Best, M. Göckeler, R. Horsley +8
We review the status of lattice calculations of the deep-inelastic structure functions of the nucleon. In addition, we present some results on the pion and rho structure functions.