EPJ Web of Conferences
Volume 37, 2012MESON 2012 – 12th International Workshop on Production, Properties and Interaction of MESONS
|Number of page(s)
|Physics of eta - parallel talks
|06 December 2012
Total and Differential Cross Sections of the Reaction pd → 3He + η at 49 and 60 MeV Excess Energy
Institut für Kernphysik, Westfälische Wilhelms-Universität Münster
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The p + d → 3He + η reaction has been used recently for various precision experiments at COSY-Jülich, e.g. for the investigation of the η-nucleus final state interaction, the search for possible η-mesic nuclei as well as for the η-mass determination with highest accuracy. A remarkable feature of this reaction is the unexpected shape of the excitation function which is strongly influenced by the η-3He final state interaction. While close to threshold (Q ≤ 11MeV) a rich data sample has been provided by the ANKE collaboration, only limited information are available at higher excess energies. Therefore, new measurements at Q = 49 and 60MeV with high statistics have been performed at the WASA-at-COSY experiment. Due to the large angular acceptance of the detector detailed investigations on angular distributions as well as their energy dependance have been performed and will be presented and discussed.
Supported by COSY-FFE grants
© Owned by the authors, published by EDP Sciences, 2012
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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