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説明
The pi0 pi0 mass spectra and angular distributions around KK_bar-threshold and at 1.5 GeV in pp_bar(at rest) to 3pi0 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.
4 pages, 1 eps figure, uses espcrc1.sty Proceedings of the int. conf. Hadron'99 at Beijing, Aug. in 1999. For our activities on sigma, visit http://amaterasu.kek.jp/sigma
収録刊行物
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- Nuclear Physics A
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Nuclear Physics A 675 222-225, 2000-07-01
Elsevier BV