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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Anomalous electric dipole moment ： ウィキペディア英語版 Anomalous electric dipole moment In particle physics, the anomalous electric dipole moment, or the electric dipole moment of a particle in short, is the electric dipole moment of a particle. There is a symmetry, the CP symmetry, which if exact and unbroken will predict an exactly zero electric dipole moment for particles. However, we know at least in the Yukawa sector from neutral kaon oscillations that CP is broken. Experiments have been performed to measure the electric dipole moment of various particles like the electron and the neutron. Many models beyond the standard model with additional CP-violating terms generically predict a nonzero electric dipole moment and are hence sensitive to such new physics. Instanton corrections from a nonzero θ term in quantum chromodynamics predict a nonzero electric dipole moment for the neutron (it is easier to measure the electric dipole moment in a neutral particle) which have not been observed. This is the strong CP problem and is a prediction of chiral perturbation theory. ==See also== * CP symmetry * anomalous magnetic dipole moment 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Anomalous electric dipole moment」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.