arXiv:hep-ph/0005251·v1·High Energy Physics — Phenomenology
Effect of light sigma-meson Production in ppbar --> 3 pi0 at rest
Muneyuki Ishida (Tokyo Institute of Tech)🇯🇵 · Toshihiko Komada (Nihon univ.)🇯🇵 · Shin Ishida (Nihon univ.)🇯🇵 · Taku Ishida (KEK)🇯🇵 · Kunio Takamatsu (KEK)🇯🇵 · Tsuneaki Tsuru (KEK)🇯🇵
Abstract
The pi0 pi0 mass spectra and angular distributions around KKbar -threshold and at 1.5 GeV in ppbar (at rest) --> 3 pi0 in the Crystal Barrel experiment are reanalyzed by applying the new method, which is consistent with unitarity of S-matrix and expressed directly by resonance parameters. The effects of light sigma-meson production are clearly seen to improve the fit with sigma, in comparing with the fit without sigma.
Comments: 8 pages, 1 Postscript figure, uses ptptex.sty