A study of the centrally produced 3pi channel in pp interactions at 450 GeV/c
The WA102 Collaboration, D. Barberis et al
TL;DR
This paper investigates the production of the 3pi channel in proton-proton collisions at 450 GeV/c, focusing on gluonic states and analyzing spin and production mechanisms to distinguish between different mesons.
Contribution
It provides new experimental insights into the suppression of qqbar states at small dPT and differentiates production mechanisms for eta and omega mesons.
Findings
qqbar states are suppressed at small dPT
Distinct production mechanisms for eta and omega mesons
Confirmation of previous observations regarding qqbar suppression
Abstract
The reaction pp -> pf (pi+pi-pi0) ps has been studied at 450 GeV/c in an experiment designed to search for gluonic states. A spin analysis has been performed and the dPT filter applied. The analysis confirms the previous observation that all undisputed qqbar states are suppressed at small dPT. In addition, a clear difference is observed in the production mechanism for the eta and omega.
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