Open AccessStudy of π−p→η′ηn in a search for glueballs
Author(s) -
F. Bi,
C. Bricman,
S.V. Donskov,
P. Duteil,
M. Gouanère,
A.V. Inyakin,
G.V. Khaustov,
A.V. Kulik,
J.P. Lagnaux,
A.A. Lednev,
Yu.V. Mikhailov,
T. Mouthuy,
J.P. Peigneux,
A. Possoz,
Yu.D. Prokoshkin,
Yu.V. Rodnov,
S. Sadovsky,
P. Shagin,
A. Sill,
A. Singovsky,
J.P. Stroot,
V.P. Sugonyaev
Publication year - 1984
Publication title -
il nuovo cimento a
Language(s) - English
Resource type - Journals
ISSN - 0369-3546
DOI - 10.1007/bf02785807
Subject(s) - hodoscope , physics , pion , nuclear physics , spectrometer , particle physics , meson , scalar (mathematics) , range (aeronautics) , cosmic ray , optics , geometry , mathematics , materials science , composite material
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.SCOPUS: ar.jinfo:eu-repo/semantics/publishe
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