Forward dispersion relations for pi k scattering and the k-0(*)(800) resonance
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2016
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Polska Akademia Nauk, Instytut Fizyki
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Abstract
We review the recent analysis of π K scattering data in terms of forward dispersion relations, and also present the parameters of the strange resonances. This work consists of fits to the data that are constrained to satisfy analyticity requirements. The method yields a set of simple and consistent parameterizations that are compatible with forward dispersion relations up to 1.6 GeV while still describing the data. We also obtain the pole parameters of the K_(0)^(*)(800) and the K^(*)(892) resonances.
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© Polska Akademia Nauk, Instytut Fizyki.
International Meeting on Excited QCD (eQCD 2016) (2016. Costa da Caparica, Lisboa).
A.R. is supported by the Spanish Projects No. FPA2011-27853-C02-02 and No. FPA2014- 53375C2-2, and Red de Excelencia de Física Hadrónica FIS2014-57026-REDT.