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首页> 外文会议>The high Energy Physics Workshop on "Scalar Mesons: An Interesting Puzzle for QCD"; May 16-18, 2003; Utica, New York >The Present Status on σ and κ Meson Properties ―Relation between scattering and production amplitudes
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The Present Status on σ and κ Meson Properties ―Relation between scattering and production amplitudes

机译：σ和κ介子性质的现状―散射与振幅的关系

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摘要

The recent experimental data of both π π/Kπ scattering and production processes, suggesting the existence of scalar σ and κ mesons, are reviewed. In many π π/Kπ production processes the direct effects of their productions are observed, while they are, because of chiral symmetry, hidden in scattering processes, and now σ(500～600) and κ(800～900) are considered to be confirmed experimentally. Relation between ππ/Kπ production amplitudes and scattering amplitudes are considered. The long believed prejudice of universal π π /Kπ phase through scattering and production amplitudes is explained to be not correct. Common fit of the production processes with the scattering phase shift is not valid, and the production processes should be independently analyzed from the scattering phase shift.
机译：回顾了ππ/Kπ散射和产生过程的最新实验数据，表明存在标量σ和κ介子。在许多ππ/Kπ生产过程中，观察到它们生产的直接影响，而由于手性对称，它们隐藏在散射过程中，现在认为σ（500〜600）和κ（800〜900）是实验证实。考虑了ππ/Kπ产生幅度与散射幅度之间的关系。人们长期以来认为普遍的ππ/Kπ相通过散射和产生振幅的偏见是不正确的。具有散射相移的生产过程的通用拟合是无效的，并且应该从散射相移中独立分析生产过程。

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