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In particle physics, the X and Y bosons (sometimes collectively called "X bosons"〔 〕) are hypothetical elementary particles analogous to the W and Z bosons, but corresponding to a new type of force predicted by the Georgi–Glashow model, a grand unified theory. ==Details== The X and Y bosons couple quarks to leptons, allowing violation of the conservation of baryon number, and thus permitting proton decay. An X boson would have the following decay modes:〔 〕 : → + : → + where the two decay products in each process have opposite chirality, is an up quark, is a down quark and is a positron. A Y boson would have the following decay modes:〔 : → + : → + : → + where the first decay product in each process has left-handed chirality and the second has right-handed chirality and is an electron antineutrino. Similar decay products exist for the other quark-lepton generations In these reactions, neither the lepton number (''L'') nor the baryon number (''B'') is conserved, but is. Different branching ratios between the X boson and its antiparticle (as is the case with the K-meson) would explain baryogenesis. 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「X and Y bosons」の詳細全文を読む スポンサード リンク
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