Imposing threshold conditions on admissible ππ partial-wave parametrizations refines f0(500) pole positions extracted by Padé approximants.
A Rational approach to resonance saturation in large-N(c) QCD.JHEP, 05:040, 2007
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Assessing the role of threshold conditions in the determination of uncertainties in pole extractions using Pad\'e approximants
Imposing threshold conditions on admissible ππ partial-wave parametrizations refines f0(500) pole positions extracted by Padé approximants.