Pion-kaon scattering amplitude constrained with forward dispersion relations up to 1.6 GeV
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2016
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Amer Physical Soc
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Abstract
In this work we provide simple and precise parametrizations of the existing πK scattering data from threshold up to 1.6 GeV, which are constrained to satisfy forward dispersion relations as well as three additional threshold sum rules. We also provide phenomenological values of the threshold parameters and of the resonance poles that appear in elastic scattering.
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© 2016 American Physical Society.
J. R. P. and A. R. are supported by Spanish Projects No. FPA2011-27853-C02-02 and No. FPA2014-53375-C2-2 and Red de Excelencia de Física Hadrónica FIS2014-57026-REDT. We are very grateful to B. Moussallam for kindly providing us with his parametrizations as well as for his instructive comments and discussions.