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arXiv · 0903.1513

Search for eta-mesic helium using the WASA-AT-COSY detector

W. Krzemien·P. Moskal·J. Smyrski
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Abstract

We conduct a search for the 4He-eta bound state with the WASA-at-COSY facility via the measurement of the excitation function for the reaction dd->3Heppi-. In first experiment performed in June 2008, we used COSY deuteron beam with a slowly ramped beam momentum corresponding to a variation of the excess energy for the 4He-eta system from -51.4 MeV to 22 MeV. Here we report on the status of the measurement and the data evaluation.

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W. Krzemien, P. Moskal, J. Smyrski. 2009-03-09. Search for eta-mesic helium using the WASA-AT-COSY detector. https://arxiv.org/abs/0903.1513

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