Global parameterization of scattering up to 2

2019 
We provide global parameterizations of scattering S 0 and P partial waves up to roughly 2 GeV for phenomenological use. These parameterizations describe the output and uncertainties of previous partial-wave dispersive analyses of , both in the real axis up to 1.12 and in the complex plane within their applicability region, while also fulfilling forward dispersion relations up to 1.43 . Above that energy we just describe the available experimental data. Moreover, the analytic continuations of these global parameterizations also describe accurately the dispersive determinations of the , and pole parameters.
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