A study of the centrally produced πππ system formed in the reaction pp→ p(πππ) p at 300 GeV/c.

Authors :: Armstrong, T.
Benayoun, M.
Beusch, W.
Bloodworth, I.
Carney, J.
Childs, R.
Evangelista, C.
French, B.
Ghidini, B.
Girone, M.
Jacholkowski, A.
Kahane, J.
Kinson, J.
Kirk, A.
Knudson, K.
Lenti, V.
Leruste, Ph.
Malamant, A.
Narjoux, J.
Navach, F.
Source :: Zeitschrift für Physik. C, Particles & Fields; 1990, Vol. 48 Issue 2, p213-220, 8p
Publication Year :: 1990
Abstract: The reaction pp→ p(πππ) p, where the πππ system is centrally produced, has been studied at 300 GeV/c. The πππ mass spectrum shows evidence for the η, ω and a (1320) as well as an enhancement in the a (1260) region. A Dalitz plot analysis of the πππ system has been performed. The a (1260) parameters coming from the fit of the 1 S wave are m=1208±15 MeV and Γ=430±50 MeV. No evidence is found for the h(1170) or h(1380). [ABSTRACT FROM AUTHOR]

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