Performing a PWA of the π-π-π+ system over the -tp/p range 0.2 to 0.4 GeV2 we find evidence for a JP = 0-,JG=1- meson of mass 1342 ± 20 MeV and width 220 ±70 MeV decaying into ε{lunate}π. This state is produced by natural parity exchange with a slope similar to that of elastic scattering. It can be interpreted as a radial excitation of the π meson (π′).
Evidence for a new pseudoscalar meson / M. Bonesini, R. Donald, D. Edwards, M. Edwards, B. French, B. Ghidini, M. Houlden, L. Mandelli, F. Navach, A. Palano, E. Paul, L. Perini, V. Picciarelli, I. Smith. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 103:1(1981), pp. 75-78.
Evidence for a new pseudoscalar meson
L. Perini;
1981
Abstract
Performing a PWA of the π-π-π+ system over the -tp/p range 0.2 to 0.4 GeV2 we find evidence for a JP = 0-,JG=1- meson of mass 1342 ± 20 MeV and width 220 ±70 MeV decaying into ε{lunate}π. This state is produced by natural parity exchange with a slope similar to that of elastic scattering. It can be interpreted as a radial excitation of the π meson (π′).
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