1 research outputs found
Extraction of the Axial Nucleon Form Factor from Neutrino Experiments on Deuterium
We present new parameterizations of vector and axial nucleon form factors. We
maintain an excellent descriptions of the form factors at low momentum
transfers (), where the spatial structure of the nucleon is important, and
use the Nachtman scaling variable to relate elastic and inelastic form
factors and impose quark-hadron duality constraints at high where the
quark structure dominates. We use the new vector form factors to re-extract
updated values of the axial form factor from \numu experiments on deuterium.
We obtain an updated world average value from \numud, \numubarH and pion
electroproduction experiments of = . Our
parameterizations are useful in modeling interactions at low energies
(e.g. for \numu oscillations experiments). The predictions for high can
be tested in the next generation electron and \numu scattering experiments.Comment: Presented by A. Bodek at the European Physical Society Meeting,
EPS2007, Manchester, England, July 2007, 4 pages, 2 figure