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Search for the 4He-eta bound state with WASA-at-COSY
Wojciech Krzemien
We conduct a search for the 4He-eta bound state with WASA-at-COSY facility, via a measurement of the excitation functions for the dd->3Heppi- reaction, where the outgoing p-pi- pai…
Search for He-eta bound states with the WASA-at-COSY facility
Magdalena Skurzok, Pawel Moskal, Wojciech Krzemien
The existence of eta-mesic nuclei in which the eta meson is bound in a nucleus by means of the strong interaction was postulated already in 1986, albeit not yet confirmed it by exp…
Exclusive Measurement of the eta --> pi+ pi- gamma Decay
P. Adlarson, C. Adolph, W. Augustyniak +119
An exclusive measurement of the decay eta --> pi+ pi- gamma has been performed at the WASA facility at COSY. The eta mesons were produced in the fusion reaction pd --> 3He X at a p…
Search for eta-mesic 4He with WASA-at-COSY
Wojciech Krzemien
In June 2008 we performed a search for the 4He-eta bound state by measuring the excitation function of the dd to 3He p pi- reaction near the eta production threshold using the WASA…