| Title: | MESON RESONANCES IN PROTON-ANTIPROTON ANNIHILATION |
| DOI No: | 10.1142/9789812777157_0051 |
| Source: | PHOTON 2001 (pp 253-258)
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| Author(s): | C. AMSLER
Physik-Institut der Universität Zürich, Winterthurerstrasse 190, CH-8035 Zürich, Switzerland
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| Abstract: | Crystal Barrel data for proton-antiproton annihilation in flight at 900 MeV/c are presented. The channels  , π0π0η and π0ηη are used to search for isoscalar 0++ and 2++ mesons in the mass range 1500 – 2000 MeV. Both 3π0 and π0ηη data sets require an isoscalar 2++ resonance decaying into π0π0 and ηη with mass M = (1867±46) MeV and width Γ = (385±58) MeV. The analysis of π0π0η leads to an isovector 2++ state decaying into π0η with mass M = (1698 ± 44) MeV and width Γ = (265 ± 55) MeV. The 3π0 and π0ηη data do not show any f0(1710). This adds supportive evidence that this meson is mainly  . |
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