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Two-photon physics [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
It is reviewed how Compton scattering sum rules relate low-energy nucleon structure quantities to the nucleon excitation spectrum. In particular, the GDH sum rule and recently proposed extensions of it will be discussed. These extensions are sometimes more calculationally robust, which may be an advantage when estimating the chiral extrapolations of lattice QCD results, such as for anomalous magnetic moments. Subsequently, new developments in our description of the nucleon excitation spectrum will be discussed, in particular a recently developed chiral effective field theory framework for the Δ(1232)-resonance region. Within this framework, we discuss results on N and Δ masses, the γ N Δ transition and the Δ magnetic dipole moment.
Report Numbers
E 1.99:jlab-thy-05-457
E 1.99: doe/er/40150-3779
E 1.99: hep-ph/0601221
hep-ph/0601221
doe/er/40150-3779
jlab-thy-05-457
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Note
Published through SciTech Connect.
10/22/2005.
"jlab-thy-05-457"
" doe/er/40150-3779"
" hep-ph/0601221"
Symposium on 20 Years of Physics at the Mainz Microtron MAMI, Mainz, Germany, 20-22 Oct 2005.
Mark Vanderhaeghen.
Funding Information
AC05-84ER40150
View MARC record | catkey: 13823680