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VOLUME 42 (1985) | ISSUE 7 | PAGE 310
Possible exotic \varphi\pi^0 state with a mass of about 1.5 GeV
New data have been obtained on a resonance in the φπ° system which forms in the charge-exchange reaction ir~p—*Cn, The experiments were carried out on the 70-GeV accelerator at Serpukhov. The mass and width of the resonance are Mc = 1490 ± 25 MeV and Гс = 165 ± 30 MeV. The cross section has been determined atamomentumof32.5GeV/c:a(77-_/?~>C/i)BR(C-^7r°) = 35+15 nb. The С state has an isospin / = 1, a spin J> 1, and a negative charge parity. It is strongly coupled to the φπ° channel and is regarded as a possible exotic meson.