σ and κ in Scattering Processes and New π^0π^0 Phase Shift Data(§2. ππ/Kπ Scattering,Possible Existence of the σ-Meson and Its Implications to Hadron Physics)
スポンサーリンク
概要
- 論文の詳細を見る
The evidences for σ(600) and κ(900) observed in our analyses on the ππ and K_π scattering phase shift data are described, briefly. The analysis have been performed by the interfering amplitude method, which satisfies the unitarity requirement, using physically meaningful parameters. The introduction of the negative phase shifts (repulsive force) are essential in the analysis. New data for the π^0π^0 scattering amplitudes and the I=0 S wave phase shifts are presented. The data have been obtained in the π^-p charge exchange reaction, π^-p → π^0π^0n at 9 GeV by the E135 experiment at the KEK PS. The amplitude analysis are performed. The behavior of the I=0 S wave phase shifts below KK^^- threshold are consistent with those of the π^+π^-, so called, standard data and those of the down-flat solution of the CEBN-Cracow-Munich polarization data. The analysis of the π^0π^0 phase shift data observes σ(600) with the B-W parameters, M_σ= 588 ± 12 MeV and Γ_σ= 281 ± 25 MeV, which are in good agreement with those in our analysis on the π^+π^- data.
- 素粒子論グループ 素粒子研究編集部の論文
- 2001-02-20
著者
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Inagaki T.
KEK
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Sato T.
KEK
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Yoshimura Y.
KEK
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Kojima T.
Saga University
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Takamatsu Kunio
Cross Comprehensive Research Organization For Science And Society
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Nakano T.
Department Of Physics Kyoto University
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Tsuru T
Japan Atomic Energy Research Institute
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Ishida M.y.
Tokyo Inst. Tech.
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ISHIGAMI T.
Department of Physics, Toho University
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TAKASHIMA R.
Kyoto University of Education
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Ishigami T
Stefan Meyer Institut Fur Subatomare Physik
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Ishida S.
Nihon U.
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Ishida T.
KEK
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Komada T.
Nihon U.
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Ma A.M.
IHEP, Beijing
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Shimizu H.
Yamagata U.
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Takamatsu K.
CROSS
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Tsuru T.
KEK
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Fukui S.
Sugiyama W. U.
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Horikawa N.
Nagoya U.
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Inaba S.
KEK
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Ishizaki Y.
INS
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Iwata T.
Nagoya U.
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Kinashi T.
Nagoya U.
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Kurashima M.
Nagoya U.
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Maeda I.
Nagoya U.
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Matsuda T.
Miyazaki U.
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Mori S.
Nagoya U.
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Nakamura T.
U. Kyoto
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Nakanishi N.
Nagoya U.
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Ohmi K.
KEK
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Oomori C.
KEK
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Takamatsu K.
Miyazaki U.
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Yasu Y.
KEK
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Ma A.m.
Ihep Beijing:miyazaki U.
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TSURU Tsuneaki
High Energy Accelerator Research Organization(KEK)
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Ishida M
Department Of Physics Tokyo Institute Of Technology
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Itahashi T.
Department Of Physics Kyushu University
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Shibuya H.
Icrr Univ. Of Tokyo
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Omata K.
Laboratory Of Nuclear Science Tohoku University
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Kobayashi M
Nagoya U.
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IMAMURA T.
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency
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Kojima T.
Tohoku University
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Kawamura T.
Tohoku University
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Nakabayashi T.
Laboratory of Nuclear Science, Tohoku University
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