Exploration of the origin of CP violation

CP破坏的起源探讨

• 批准号: 02640230
• 负责人: TAKASUGI Eiichi
• 金额: $ 1.41万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02640230/
• 关键词: Spontaneous CP violation; Right-handed interaction; Effective theory of hadron; Charge non-conservation; Charged neutrinos and neutron; Seasonal oscillation of solar neutrino; Twisted toroidal magnetic fields; Upper bound on Higgs masses; 太陽ニュートリノ

In this research project, we made the work to clarify the origin of symmetries and their breaking mechanisms.(1) The spontaneous breaking of CP symmetry: By extending the standard model, we made models of spontaneous breaking of CP symmetry in the model with the right-handed interaction. We explored the possibility of light right-handed gauge boson W_R. We found new features; CP violation arises mainly from the right-handed interaction and large CP violation is expected in B_S decays. Various phenomenological aspects are discussed.(2) The effective theory of hadron interaction: To convert the interaction among quarks into hadrons is an difficult and important problem. By using chiral dynamics and the effective heavy quark theory, we examined various decays, especially those related to CP violation.(3) The charge non-conservation: In the extension of the standard model with two Higgs doublets and one singlet, it is shown that the charge symmetry can be violated. As a result, neutrinos, neutron and atoms can have mini-charges which may be observed.(4) Solar neutrino: We showed that if neutrinos have large magnetic moments, the observation of the solar neutrino will provide a tool to explore the solar activities especially the dynamics of magnetic fields. we showed that the twisted magnetic fields causes the seasonal variation of the solar neutrino flux which reproduces the Cl data well and is consistent with the Kamiokande II data.(5) Mass spectrum of Higgs bosons: The upper bound of the lightest Higgs boson mass among four physical ones in two doublet model is shown to be 1/ROO<3> of the standard model case, that is, 580GeV.

在本研究项目中，我们致力于阐明对称性的起源及其破坏机制。(1)CP对称性的自发破缺：通过对标准模型的扩展，我们建立了具有右手相互作用的CP对称性自发破缺模型。我们探讨了轻右手规范玻色子W_R的可能性。我们发现了新的特征：CP破坏主要来自右手相互作用，并且在B_S衰变中预期有大的CP破坏。各种现象学方面进行了讨论。(2)强子相互作用的有效理论：把夸克间的相互作用转化为强子是一个困难而重要的问题。利用手征动力学和有效重夸克理论，我们研究了各种衰变，特别是与CP破坏有关的衰变。(3)电荷不守恒：在两个Higgs二重态和一个单重态的标准模型的推广中，证明了电荷对称性可以被破坏。因此，中微子、中子和原子可以具有可以观察到的微电荷。(4)太阳中微子：我们指出，如果中微子具有大的磁矩，对太阳中微子的观测将为研究太阳活动特别是磁场动力学提供一种工具。结果表明，扭曲磁场引起太阳中微子通量的季节变化，这与Cl数据吻合得很好，与Kamiokande II数据一致。(5)Higgs玻色子的质量谱：在双偶态模型中，四种物理粒子中最轻的Higgs玻色子的质量上限为标准模型的1/ROO<3>，即580 GeV。

项目成果

T.KURIMOTO: "Long-Distance Effect on CP Violation in K^O-K^O Mixing" Progress of Theoretical Physics. 84. 675-682 (1990)

T.KURIMOTO：“K^O-K^O 混合中 CP 破坏的长距离效应”理论物理进展。

E.TAKASUGI: "Carge nonconservation and charges of neutrinos,neutron and atoms" Physical Review. D44. 3706-3708 (1991)

E.TAKASUGI：“中微子、中子和原子的电荷不守恒和电荷”物理评论。

H. Nishimura, E. Takasugi and M. Tanaka: "Light W_R and the Spontaneous CP Violation. II" Progress of Theoretical Physics. 85. 343-354 (1991)

H. Nishimura、E. Takasugi 和 M. Tanaka：“光 W_R 和自发 CP 破坏。II”理论物理进展。

T. Kurimoto: "Long-Distance Effect on CP Violation in K^0-K^0 Mixing" Progress of Theoretical Physics. 84. 675-682 (1990)

T. Kurimoto：“K^0-K^0 混合中 CP 破坏的长距离效应”理论物理进展。

M.MARUNO: "MiniーCharge NonーConservation in SU(3)_C×SU(2)_L×U(1)_Y Models" Progress of Theoretical Physics. 86. 907-915 (1991)

M.MARUNO：“SU(3)_C×SU(2)_L×U(1)_Y 模型中的 MiniCharge 非守恒”理论物理进展 86. 907-915 (1991)。