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arXiv · 1405.6474

Pole structure from energy-dependent and single-energy fits to $πN$ elastic scattering data

Alfred Švarc·Mirza Hadžimehmedović·Hedim Osmanović·Jugoslav Stahov·Ron L. Workman
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Abstract

The pole structure of the current GW/SAID partial-wave analysis of elastic $πN$ scattering and $ηN$ production data is studied. Pole positions and residues are extracted from both the energy-dependent and single-energy fits, using two different methods. For the energy-dependent fits, both contour integration and a Laurent+Pietarinen approach are used. In the case of single-energy fits, the Laurent+Pietarinen approach is used. Errors are estimated and the two sets of results are compared to other recent and older fits to data.

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Alfred Švarc, Mirza Hadžimehmedović, Hedim Osmanović, Jugoslav Stahov, Ron L. Workman. 2015-01-28. Pole structure from energy-dependent and single-energy fits to $πN$ elastic scattering data. https://doi.org/10.1103/physrevc.91.015207

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