Evidence for New 0 S Resonances in the π+ππ Systems

G. Bellini, M. di Corato, F. Palombo, J. Pernegr, A. Sala, S. Sala, G. Vegni, P. L. Frabetti, Yu. I. Ivanshin, L. K. Litkin, S. I. Sychkov, A. A. Tyapkin, I. M. Vassilevski, V. V. Vishniakov, and O. A. Zaimidoroga
Phys. Rev. Lett. 48, 1697 – Published 21 June 1982
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Abstract

Partial-wave analysis has been performed on 120 000 πππ+ events coherently produced on nuclear targets in a π beam of 40 GeV/c. Evidence has been found for a 0 S resonance at 1.24 GeV with a width Γ0.36 GeV. The data also suggest the presence of another 0 S resonance of similar width near 1.8 GeV. These observations can be interpreted as radial excitations of the π meson.

  • Received 24 August 1981

DOI:https://doi.org/10.1103/PhysRevLett.48.1697

©1982 American Physical Society

Authors & Affiliations

G. Bellini, M. di Corato, F. Palombo, J. Pernegr, A. Sala, S. Sala, and G. Vegni

  • Istituto di Fisica dell'Università and Sezione Istituto Nazionale di Fisica Nucleare, I-20133 Milano, Italy

P. L. Frabetti

  • Istituto di Fisica dell'Università and Sezione Istituto Nazionale di Fisica Nucleare, I-40126 Bologna, Italy

Yu. I. Ivanshin, L. K. Litkin, S. I. Sychkov, A. A. Tyapkin, I. M. Vassilevski, V. V. Vishniakov, and O. A. Zaimidoroga

  • Joint Institute for Nuclear Research, Dubna, U. S. S. R.

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Vol. 48, Iss. 25 — 21 June 1982

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