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arXiv · hep-ph/0609236

Multichannel Anomaly of the Resonance Pole Parameters Resolved

Sasa Ceci·Jugoslav Stahov·Alfred Svarc·Shon Watson·Branimir Zauner
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Abstract

Inspired by anomalies which the standard scattering matrix pole-extraction procedures have produced in a mathematically well defined coupled-channel model, we have developed a new method based solely on the assumption of partial-wave analyticity. The new method is simple and applicable not only to theoretical predictions but to the empirical partial-wave data as well. Since the standard pole-extraction procedures turn out to be the lowest-order term of the proposed method the anomalies are understood and resolved.

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Sasa Ceci, Jugoslav Stahov, Alfred Svarc, Shon Watson, Branimir Zauner. 2006-09-22. Multichannel Anomaly of the Resonance Pole Parameters Resolved. https://doi.org/10.1103/physrevd.77.116007

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