翻訳と辞書 Words near each other ・ Two-way satellite time and frequency transfer ・ Two-way security ・ Two-way simultaneous ・ Two-way street ・ Two-graph ・ Two-Gun Gussie ・ Two-Gun Kid ・ Two-Gun Man from Harlem ・ Two-Gun of the Tumbleweed ・ Two-handed ・ Two-handed manual alphabets ・ Two-Handed Trans-Atlantic Race ・ Two-hander ・ Two-Headed Monster ・ Two-Headed Poems ・ Two-Higgs-doublet model ・ Two-hybrid screening ・ Two-in, two-out ・ Two-Lane Blacktop ・ Two-Lane Blacktop (song) ・ Two-lane expressway ・ Two-leaved Solomon's seal ・ Two-legged tie ・ Two-letter country codes ・ Two-letter English words ・ Two-level defense ・ Two-level game theory ・ Two-level grammar ・ Two-level scheduling ・ Two-level utilitarianism Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Two-Higgs-doublet model ： ウィキペディア英語版 Two-Higgs-doublet model In particle physics, a two-Higgs-doublet model (2HDM) is an extension of the Standard Model in which a second Higgs doublet is added. The addition of the second Higgs doublet leads to five physical states: the CP even neutral Higgs bosons $h$ and $H$ (where $H$ is heavier than $h$ by convention), the CP odd pseudoscalar $A$ and two charged Higgs bosons $H^\backslash pm$. Such a model has six free parameters: four Higgs masses ($m\_h,\; m\_H,\; m\_A,\; m\_$), the ratio of the two vacuum expectation values ($\backslash tan\; \backslash beta$) and a mixing angle ($\backslash alpha$). A special case is when $\backslash cos(\backslash beta\; -\; \backslash alpha)\; =\; 0$, the so-called ''alignment limit'', in which the lighter CP even Higgs boson $h$ has couplings like the Higgs boson of the Standard Model. == Classification == Two-Higgs-doublet models can introduce Flavor-changing neutral currents which have not been observed so far. The Glashow-Weinberg condition, requiring that each group of fermions (up-type quarks, down-type quarks and charged leptons) couples exactly to one of the two doublets, is sufficient to avoid the prediction of flavor-changing neutral currents. Depending on which type of fermions couples to which doublet $\backslash Phi$, one can divide two-Higgs-doublet models into the following classes: By convention, $\backslash Phi\_2$ is the doublet to which up-type quarks couple. 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「Two-Higgs-doublet model」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.