par Binon, Freddy ;Bricman, Charles ;Donskov, Sergey;Duteil, P.;Gouanère, M.;Inyakin, Alexandre A.V.;Khaustov, G.;Kulik, Alexei A.V.;Lagnaux, Jean-Pierre ;Lednev, Andrey;Mikhailov, Yu;Mouthuy, Th;Peigneux, Jean Pierre;Possoz, A.;Prokoshkin, Yu Y.D.;Rodnov, Yu Y.V.;Sadovsky, Sergey S.A.;Shagin, Petr P.M.;Sillou, Daniel;Singovsky, Alexandre A.V.;Stroot, Jean-Pierre ;Sugonyaev, Valentine
Référence Nuovo cimento. A., 80, 3, page (363-370)
Publication Publié, 1984-04
Référence Nuovo cimento. A., 80, 3, page (363-370)
Publication Publié, 1984-04
Article révisé par les pairs
Résumé : | η′η pair production in the charge exchange reaction π-p→η′ηn has been observed and studied in a search for glueballs with the 38 GeV/c pion beam of the 70 GeV IHEP accelerator. The γ-rays from the decay η′η→4γ were detected with the hodoscope spectrometer GAMS-2000. The η′η events in the mass range from threshold up to 1.8 GeV are decays of the scalar G(1590)-meson which has been already observed in its ηη decay mode. The measured ratio of the partial widths of the G→η′η and the G → ηη decay channels is 2.7±0.8 in agreement with the value expected for glueballs. © 1984 Società Italiana di Fisica. |