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

High Energy Physics - Experiment 2012-08-27 v1
Authors: The FOCUS collaboration
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Abstract

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−π+K^- \pi^+ mass.

Keywords

non-parametric analysis D+ decay Kπ amplitudes S-wave D-wave FOCUS experiment

Cite

@article{arxiv.hep-ex/0612032,
  title  = {A Non-parametric Approach to Measuring the \kpi{} Amplitudes in \dpkkpi{} Decay},
  author = {The FOCUS collaboration},
  journal= {arXiv preprint arXiv:hep-ex/0612032},
  year   = {2012}
}

Comments

13 pages 3 figures

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