Abstract:An enhancement in the 2ir° mass spectrum in the region M^1 T <1 GeV has been observed in 7r""+/>-* 7r° + 7r°+tt at 10 GeV/c. This is interpreted as a broad isospin-0, s-wave resonance at 600 ± 100 MeV with width 400 ± 100 MeV. Because of limited mass resolution, we cannot rule out several narrower resonances with these quantum numbers.
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