Multichannel Anomaly of the Resonance Pole Parameters Resolved

Phys.Rev.D77:116007,2008 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...

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Hauptverfasser: Ceci, Sasa, Stahov, Jugoslav, Svarc, Alfred, Watson, Shon, Zauner, Branimir
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Sprache:eng
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Zusammenfassung:Phys.Rev.D77:116007,2008 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.
DOI:10.48550/arxiv.hep-ph/0609236