Consistency checks of different pion-pion scattering data sets using forward dispersion relations

Details Consistency checks of different pion-pion scattering data sets using forward dispersion relations Consistency checks of different pion-pion scattering data sets using forward dispersion relations

2005-10-17

arxiv.org/abs/hep-ph/0510215v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

To appear in the Proceedings of the XI. International Conference on Hadron Spectroscopy- HADRON05. Rio de Janeiro. 21st-25th A

Scientific paper

10.1063/1.2176569

We review our evaluation of forward dispersion relations for direct fits to the different, and often conflicting, pion-pion scattering experimental analyses. We find that some of the most commonly used data sets do not satisfy these constraints by several standard deviations. We also provide a consistent pion-pion amplitude by improving a global fit to data with these dispersion relations.

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