A partial wave analysis of the ${\pi }^{-}{\pi }^{-}{\pi }^{+}$ and ${\pi }^{-}{\pi }^0{\pi }^0$ systems and the search for a $J^{PC}=1^{-+}$ meson

Abstract

A partial wave analysis (PWA) of the ${\pi }^{-}{\pi }^{-}{\pi }^{+}$ and ${\pi }^{-}{\pi }^0{\pi }^0$ systems produced in the reaction ${\pi }^{-}p\to (3\pi {)}^{-}p$ at 18 GeV/$c$ was carried out using an \emph{isobar} model assumption. This analysis is based on 3.0M ${\pi }^{-}{\pi }^0{\pi }^0$ events and 2.6M ${\pi }^{-}{\pi }^{-}{\pi }^{+}$ events and shows production of the $a_1(1260)$, $a_2(1320)$, ${\pi }_2(1670)$ and $a_4(2040)$ resonances. Results of detailed studies of the stability of partial wave fits are presented. An earlier analysis of 250K ${\pi }^{-}{\pi }^{-}{\pi }^{+}$ events from the same experiment showed possible evidence for a $J^{PC}=1^{-+}$ exotic meson with a mass of $\sim$1.6 GeV/$c^2$ decaying into $\rho \pi$. In this analysis of a higher statistics sample of the $(3\pi {)}^{-}$ system in two charged modes we find no evidence of an exotic meson.

Submitted to Physical Review D

References in corpus (5)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Meson-Meson interaction in a non-perturbative chiral approach
• N/D Description of Two Meson Amplitudes and Chiral Symmetry
• QCD phenomenology of static sources and gluonic excitations at short distances
• Properties of the a0(980) meson

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