Physical Nucleon Form Factors from Lattice QCD [electronic resource].

Published:: Washington, D.C. : United States. Dept. of Energy. Office of Energy Research, 2005.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Additional Creators:: Thomas Jefferson National Accelerator Facility (U.S.), United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

We explore the possibility of extrapolating state of the art lattice QCD calculations of nucleon form factors to the physical regime. We find that the lattice results can be reproduced using the Light Front Cloudy Bag Model and the Extended Gari-Krmpelmann Model by letting their parameters be analytic functions of the quark mass. We then use the models to extend the lattice calculations to large values of Q² of interest to current and planned experiments. These functions for the first model are also used to define extrapolations to the physical value of the pion mass, thereby allowing us to study how the predicted zero in G{sub E}(Q²)/G{sub M}(Q²) varies as a function of quark mass.

Report Numbers:

E 1.99:jlab-thy-06-04
E 1.99: doe/er/40150-3676
doe/er/40150-3676
jlab-thy-06-04

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Published through SciTech Connect.
10/25/2005.
"jlab-thy-06-04"
" doe/er/40150-3676"
Particles and Nuclei International Conference (PANIC 05), Santa Fe, New Mexico, 24-28 Oct 2005.
Gerald A. Miller; Hrayr Matevosyan; Anthony W. Thomas.

Funding Information:

AC05-84ER40150

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