翻訳と辞書 Words near each other ・ Belle de Brillet ・ Belle de Fontenay ・ Belle de Jour ・ Belle de Jour (film) ・ Belle de Jour (novel) ・ Belle de Jour (writer) ・ Belle de nuit ・ Belle Demeure Landmark AKITA ・ Belle Dingle ・ Belle du Seigneur ・ Belle Dupree ・ Belle Eagle, Tennessee ・ Belle Epoch ・ Belle Epoque (band) ・ Belle et Sébastien ・ Belle experiment ・ Belle Femme ・ Belle Fille River ・ Belle Fontaine, Alabama ・ Belle Fontaine, Haiti ・ Belle Foods ・ Belle Fountain, Wisconsin ・ Belle Fourche Dam ・ Belle Fourche Formation ・ Belle Fourche River ・ Belle Fourche Valley Railway ・ Belle Fourche, South Dakota ・ Belle Gibson ・ Belle Glade ・ Belle Glade Camp, Florida 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 Belle experiment ： ウィキペディア英語版 Belle experiment The Belle experiment is a particle physics experiment conducted by the Belle Collaboration, an international collaboration of more than 400 physicists and engineers investigating CP-violation effects at the High Energy Accelerator Research Organisation (KEK) in Tsukuba, Ibaraki Prefecture, Japan. The Belle detector, located at the collision point of the asymmetric-energy collider (KEKB), is a multilayer particle detector. Its large solid angle coverage, vertex location with precision on the order of tens of micrometres (provided by a silicon vertex detector), good pion–kaon separation at the momenta range from till few GeV/c (provided by a novel Cherenkov detector), and few-percent precision electromagnetic calorimetry (CsI(Tl) scintillating crystals) allow for many other scientific searches apart from CP-violation. Extensive studies of rare decays, searches for exotic particles and precision measurements of B mesons, D mesons, and tau particles have been carried out and have resulted in almost 300 publications in physics journals. Highlights of the Belle experiment so far include * the first observation of CP-violation outside of the kaon system (2001) * observation of: $B\; \backslash to\; K^$ * l^+ l^- and $b\; \backslash to\; s\; l^+\; l^-$ * measurement of $\backslash phi\_3$ using the $B\; \backslash to\; D\; K,\; D\; \backslash to\; K\_S\; \backslash pi^+\; \backslash pi^-$ Dalitz plot * measurement of the CKM quark mixing matrix elements $|V\_|$ and $|V\_|$ * observation of direct CP-violation in $B^0\; \backslash to\; \backslash pi^+\; \backslash pi^-$ and $B^0\; \backslash to\; K^-\; \backslash pi^+$ * observation of $b\; \backslash to\; d$ transitions * evidence for $B\; \backslash to\; \backslash tau\; \backslash nu$ * observations of a number of new particles including the X(3872) The Belle experiment operated at the KEKB accelerator, the world's highest luminosity machine. The instantaneous luminosity exceeded . The integrated luminosity collected at the resonance mass is ~ (corresponds to 771 million meson pairs). Most data is recorded on the (4S) resonance, which decays to pairs of B mesons. About 10% of the data is recorded below the (4S) resonance in order to study backgrounds. In addition, Belle has carried out special runs at the resonance to study as well as on the , and resonances to search for evidence of Dark Matter and the Higgs Boson. The samples of , and collected by Belle are the world largest samples available. The Belle II B-factory, an upgraded facility with two orders of magnitude more luminosity, has been approved in June 2010.〔(KEK press release )〕 The design and construction work is ongoing. ==See also== *B-factory * 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「Belle experiment」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.