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13 papers · 2 filters
Effective theory of the Delta(1232) in Compton scattering off the nucleon
Vladimir Pascalutsa, Daniel R. Phillips
We formulate a new power-counting scheme for a chiral effective field theory of nucleons, pions, and Deltas. This extends chiral perturbation theory into the Delta-resonance region…
The Proton-Deuteron Break-Up Process in a Three-Dimensional Approach
I. Fachruddin, Ch. Elster, W. Gloeckle
The pd break-up amplitude in the Faddeev scheme is calculated by employing a three-dimensional method without partial wave decomposition (PWD). In a first step and in view of highe…
Nucleon Polarizabilities from Low-Energy Compton Scattering
S. R. Beane, M. Malheiro, J. A. McGovern +2
An effective field theory is used to give a model-independent description of Compton scattering at energies comparable to the pion mass. The amplitudes for scattering on the proton…
An Alternative Parameterization of R-matrix Theory
Carl R. Brune
An alternative parameterization of R-matrix theory is presented which is mathematically equivalent to the standard approach, but possesses features which simplify the fitting of ex…
Lorentz Boosted NN Potential for Few-Body Systems: Application to the three-nucleon bound state
H. Kamada, W. Gloeckle, J. Golak +1
A Lorentz boosted two-nucleon potential is introduced in the context of equal time relativistic quantum mechanics. The dynamical input for the boosted nucleon-nucleon (NN) potentia…
Photoproduction of the Eta Meson from the Deuteron Near Threshold
Ch. Elster, A. Sibirtsev, S. Schneider +3
Very recent data for the reaction gamma{d} --> eta{np} are analyzed within a model that includes contributions from the impulse approximation and next order corrections due to the…