6 research outputs found
Transverse Structure of Nucleon Parton Distributions from Lattice QCD
This work presents the first calculation in lattice QCD of three moments of
spin-averaged and spin-polarized generalized parton distributions in the
proton. It is shown that the slope of the associated generalized form factors
decreases significantly as the moment increases, indicating that the transverse
size of the light-cone quark distribution decreases as the momentum fraction of
the struck parton increases.Comment: 4 pages, 1 figur
Calculation of Nucleon Electromagnetic Form Factors
The fomalism is developed to express nucleon matrix elements of the
electromagnetic current in terms of form factors consistent with the
translational, rotational, and parity symmetries of a cubic lattice. We
calculate the number of these form factors and show how appropriate linear
combinations approach the continuum limit.Comment: Lattice 2002 (hadronic matrix elements) 3 page
Light Quark Physics with Dynamical Wilson Fermions
We present results for spectroscopy, quark masses and decay constants
obtained from SESAM's and TkL's large statistics simulations of QCD with two
dynamical Wilson fermions.Comment: 3 pages; to appear in the proceedings of Lat.'9
Continuum Extrapolation of Moments of Nucleon Quark Distributions in Full QCD
Moments of light cone quark density, helicity, and transversity distributions are calculated in unquenched lattice QCD at and using Wilson fermions on lattices. These results are combined with earlier calculations at using SESAM configurations to study the continuum limit
Continuum extrapolation of moments of nucleon quark distributions in full QCD
Moments of light cone quark density, helicity, and transversity distributions
are calculated in unquenched lattice QCD at and
using Wilson fermions on lattices. These results are
combined with earlier calculations at using SESAM configurations
to study the continuum limit.Comment: Lattice 2002 (hadronic matrix elements) 3 pages, 1 figur