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Unitary isobar model --MAID2007

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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 2GeV 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 2GeV. Because of its inherent simplicity, MAID2007 is well adopted for predictions and analysis of the observables in pion photo- and electroproduction.

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Authors and Affiliations

  1. Institut für Kernphysik, Universität Mainz, D-55099, Mainz, Germany

    D. Drechsel & L. Tiator

  2. JINR Dubna, 141980, Moscow Region, Russia

    S. S. Kamalov

Authors
  1. D. Drechsel
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  2. S. S. Kamalov
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  3. L. Tiator
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Correspondence to L. Tiator.

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U.-G. Meißner

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Drechsel, D., Kamalov, S.S. & Tiator, L. Unitary isobar model --MAID2007. Eur. Phys. J. A 34, 69–97 (2007). https://doi.org/10.1140/epja/i2007-10490-6

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  • DOI: https://doi.org/10.1140/epja/i2007-10490-6

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