A Non-parametric Approach to Measuring the \kpi{} Amplitudes in \dpkkpi{} Decay

Details A Non-parametric Approach to Measuring the \kpi{} Amplitudes in \dpkkpi{} Decay A Non-parametric Approach to Measuring the \kpi{} Amplitudes in \dpkkpi{} Decay

2006-12-13

arxiv.org/abs/hep-ex/0612032v1

Phys.Lett.B648:156-163,2007

Physics

High Energy Physics

High Energy Physics - Experiment

13 pages 3 figures

Scientific paper

10.1016/j.physletb.2007.03.010

Using a large sample of \dpkkpi{} decays collected by the FOCUS photoproduction experiment at Fermilab, we present the first non-parametric analysis of the \kpi{} amplitudes in \dpkkpi{} decay. The technique is similar to the technique used for our non-parametric measurements of the \krzmndk{} form factors. Although these results are in rough agreement with those of E687, we observe a wider S-wave contribution for the \ksw{} contribution than the standard, PDG \cite{pdg} Breit-Wigner parameterization. We have some weaker evidence for the existence of a new, D-wave component at low values of the $K^- \pi^+$ mass.

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