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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 GIM mechanism ： ウィキペディア英語版 GIM mechanism In quantum field theory, the GIM mechanism (or Glashow–Iliopoulos–Maiani mechanism) is the mechanism by which flavour-changing neutral currents (FCNCs) are suppressed. It also explains why weak interactions that change strangeness by 2 (Δ''S'' = 2 transitions) are suppressed while those that change strangeness by 1 (Δ''S'' = 1 transitions) are allowed. The mechanism was put forth by Sheldon Lee Glashow, John Iliopoulos and Luciano Maiani in their famous paper "Weak Interactions with Lepton–Hadron Symmetry" published in ''Physical Review D'' in 1970.〔 〕 At the time the GIM mechanism was proposed, only three quarks (up, down, and strange) were thought to exist. Glashow and James Bjorken predicted a fourth quark in 1964,〔 〕 but there was little evidence for its existence. The GIM mechanism however, ''required'' the existence of a fourth quark, and the prediction of the charm quark is usually credited to Glashow, Iliopoulos, and Maiani. ==References== 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「GIM mechanism」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.