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Prog. Theor. Phys. Vol. 104 No. 1 (2000) pp. 203-210

Effect of Light σ-Meson Production in p\barp→ 3π⁰ at Rest

Muneyuki Ishida, Toshihiko Komada,^* Shin Ishida,^* Taku Ishida,^** Kunio Takamatsu^** and Tsuneaki Tsuru^**

Department of Physics, Tokyo Institute of Technology
Tokyo 152-8551, Japan
^*Atomic Energy Research Institute, College of Science and Technology
Nihon University, Tokyo 101-0062, Japan
^**KEK, Tsukuba 305-0801, Japan

(Received April 2, 2000)

Abstract:

The π⁰π⁰ mass spectra and angular distributions around the K\barK-threshold and at 1.5 GeV in p\barp ( at rest)→3π⁰ in the Crystal Barrel experiment are reanalyzed by applying a new method, which is consistent with the unitarity of the S-matrix and is expressed directly in terms of resonance parameters. The effects of light σ-meson production are clearly seen to improve the fit with σ in comparison with the fit without σ.

URL : http://ptp.ipap.jp/link?PTP/104/203/
DOI : 10.1143/PTP.104.203

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Citing Article(s) :

1. Progress of Theoretical Physics Supplement No.149 (2003) pp. 190-202 :

   The Present Status on σ and κ Meson Properties

   Muneyuki Ishida

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