Search for the C-violating meson decay η → π0e+e− with WASA-at-COSY
Westfälische Wilhelms-Universität Münster, Institut für Kernphysik, Münster Germany
* e-mail: Kay.Demmich@uni-muenster.de
Published online: 29 November 2016
TheWASA-at-COSY experiment is, besides meson production processes, dedicated to studies on rare and forbidden decays of light mesons. In extensive η-production beam times, a high-statistics data set have been collected by means of proton-proton scattering which opens the door to studies on forbidden decays like the C-parity violating process η → π0e+e−. In this article, an optimized detector calibration leading to a significantly improved missing mass resolution and a preliminary decay analysis are presented.
© The Authors, published by EDP Sciences, 2016
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