dorsal/arxiv
View SchemaMAID Analysis Techniques
| Authors | Lothar Tiator, Sabit Kamalov |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0603012 |
| URL | https://arxiv.org/abs/nucl-th/0603012 |
| DOI | 10.1142/9789812773333_0002 |
Abstract
MAID is a unitary isobar model for a partial wave analysis of pion photo- and electroproduction in the resonance region. It is fitted to the world data and can give predictions for multipoles, amplitudes, cross sections and polarization observables in the energy range from pion threshold up to W=2 GeV and photon virtualities Q^2 < 5 GeV^2. Using more recent experimental results from Mainz, Bates, Bonn and JLab for Q^2 up to 4.0 GeV^2, the Q^2 dependence of the helicity couplings A_{1/2}, A_{3/2}, S_{1/2} has been extracted for a series of four star resonances. We compare single-Q^2 analyses with a superglobal fit in a new parametrization of Maid2005. Besides the (pion) MAID, at Mainz we maintain a collection of online programs for partial wave analysis of eta, eta' and kaon photo- and electroproduction which are all based on similar footings with field theoretical background and baryon excitations in Breit-Wigner form.
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"abstract": "MAID is a unitary isobar model for a partial wave analysis of pion photo- and\nelectroproduction in the resonance region. It is fitted to the world data and\ncan give predictions for multipoles, amplitudes, cross sections and\npolarization observables in the energy range from pion threshold up to W=2 GeV\nand photon virtualities Q^2 \u003c 5 GeV^2. Using more recent experimental results\nfrom Mainz, Bates, Bonn and JLab for Q^2 up to 4.0 GeV^2, the Q^2 dependence of\nthe helicity couplings A_{1/2}, A_{3/2}, S_{1/2} has been extracted for a\nseries of four star resonances. We compare single-Q^2 analyses with a\nsuperglobal fit in a new parametrization of Maid2005. Besides the (pion) MAID,\nat Mainz we maintain a collection of online programs for partial wave analysis\nof eta, eta\u0027 and kaon photo- and electroproduction which are all based on\nsimilar footings with field theoretical background and baryon excitations in\nBreit-Wigner form.",
"arxiv_id": "nucl-th/0603012",
"authors": [
"Lothar Tiator",
"Sabit Kamalov"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1142/9789812773333_0002",
"title": "MAID Analysis Techniques",
"url": "https://arxiv.org/abs/nucl-th/0603012"
},
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