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

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

2009-03-09

arxiv.org/abs/0903.1513v1

Acta Phys.Polon.Supp.2:141-148,2009

Physics

Nuclear Physics

Nuclear Experiment

Presented at Symposium on Meson Physics: extended COSY-11 collaboration meeting, Cracow, Poland, 1-4 Oct 2008, 8 pages, 5 figu

Scientific paper

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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