Summary of $π$--$π$ Scattering Experiments

Details Summary of $π$--$π$ Scattering Experiments Summary of $π$--$π$ Scattering Experiments

1994-12-20

arxiv.org/abs/hep-ph/9412339v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk given at Workshop on Chiral Dynamics, MIT, July 25 - 29 1994. 12 pages, TeX, 3 figs. included in a uuencoded file (psfig.

Scientific paper

10.1007/3-540-59279-2_68

Present status of the study of the low energy $\pi\pi$ interaction is reviewed, including the recent results on reactions $\pi N \to\pi\pi N$ near threshold. Current experimental values of s-wave $\pi\pi$ scattering lengths are compared with predictions of various theoretical models. Required experimental and theoretical improvements are discussed, in particular the need for a new $K_{e4}$ decay measurement, and a more reliable theoretical interpretation of the near-threshold $\pi N \to\pi\pi N$ data.

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