Unitary Isobar Model - MAID2007
Abstract
The unitary isobar model MAID2007 has been developed to analyze the world data of pion photo- and electroproduction. The model contains both a common background and several resonance terms. The background is unitarized according to the K-matrix prescription, and the 13 four-star resonances with masses below 2 GeV are described by appropriately unitarized Breit-Wigner forms. The data have been analyzed by both single-energy and global fits, and the transverse and longitudinal helicity amplitudes have been extracted for the four-star resonances below 2 GeV. Because of its inherent simplicity, MAID2007 is well adopted for predictions and analysis of the observables in pion photo- and electroproduction.
Keywords
Cite
@article{arxiv.0710.0306,
title = {Unitary Isobar Model - MAID2007},
author = {D. Drechsel and S. S. Kamalov and L. Tiator},
journal= {arXiv preprint arXiv:0710.0306},
year = {2008}
}
Comments
32 pages including 13 tables and 24 figures