Energy Calibration for the Forward Detector at WASA-at-COSY
Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, Germany
a e-mail: Kay.Demmich@uni-muenster.de
Published online: 26 November 2014
Studies on rare and forbidden decays of light mesons are one main aspect of the WASA-at-COSY physics program. In this context a large data set for η mesons has been produced in the proton-proton scattering in order to investigate the decay properties of this meson. This high statistic measurement allows, e.g., for the search for the C-parity violating reaction η → π0 + e+ + e−. This article presents a new calibration method which allows for an improved separation of the physical background by means of the missing mass method.
© Owned by the authors, published by EDP Sciences, 2014
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.