Search for Η-mesic Helium Using the Wasa-at-cosy Detector

نویسندگان

  • Wojciech Krzemień
  • Jerzy Smyrski
چکیده

We conduct a search for the He − η bound state with the WASAat-COSY facility via the measurement of the excitation function for the reaction dd → He p π−. 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 Heη 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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تاریخ انتشار 2009