S-wave $K^-π+$ System in $D^+\to K^-π^+π^+$ Decays from Fermilab E791

Details S-wave $K^-π+$ System in $D^+\to K^-π^+π^+$ Decays from Fermilab E791 S-wave $K^-π+$ System in $D^+\to K^-π^+π^+$ Decays from Fermilab E791

2005-06-15

arxiv.org/abs/hep-ex/0506040v2

Physics

High Energy Physics

High Energy Physics - Experiment

Submitted to proceedings of Moriond QCD 2005, La Thuile, March 2005

Scientific paper

A new approach to the analysis of three body decays is presented. Model-independent results are obtained for the \swave $K\pi$ amplitude as a function of $K\pi$ invariant mass. These are compared with results from $\Km\pip$ elastic scattering, and the prediction of the Watson theorem, that the phase behavour be the same below $K\eta^{\prime}$ threshold, is tested. Contributions from $I=\half$ and $I={3\over 2}$ are not resolved in this study. If $I=\half$ dominates, however, the Watson theorem does not describe these data well.}

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