https://doi.org/10.1051/epjconf/201613003001
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
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
