1 7 O ct 2 00 7 Using COSY – 11 apparatus for the precise studies of the natural width of the η ′ meson


We present preliminary results and motivation of measurement of the total width of the η ′ meson (Γ η ′). The physics of the η ′ meson receives an increasing interest in view of the forthcoming measurements planned e.g. at the COSY, DAφ NE-2 and MAMI-C facilities where the η ′ will be produced in hadron-hadron, e +-e − , and γ-hadron reactions, respectively… (More)


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