Abstract

The reaction pp→ p f ( π + π − π 0) p s has been studied at 450 GeV/c in an experiment designed to search for gluonic states. A spin analysis has been performed and the dP T filter applied. The analysis confirms the previous observation that all undisputed q q states are suppressed at small dP T . In addition, a clear difference is observed in the production mechanism for the η and ω.

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