Exploration of physics beyond the standard model through flavor physics

通过风味物理学探索标准模型之外的物理学

• 批准号: 17540286
• 负责人: OKADA Yasuhiro
• 金额: $ 1.82万
• 依托单位: High Energy Accelerator Research Organization
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17540286/
• 关键词: elementary particle theory; Particle physics experiment; flavor physics; supersymmetry; B meson; lepton flavor violation; standard model of elementary particle physics; little Hires model; Bファクトリー; タウ粒子; 標準模型; ニュートリノ; レプトンフレーバー; ミュー粒子; 左右対称性

1. Study of flavor physics in supersymmetric modelsSupersymmetry is considered to be a promising candidate of new physics at the TeV scale, and search for supersymmetric particles is a main target of LHC experiments. If supersymmetric particles are discovered there, flavor physics will play an important role in probing theory at the GUT and/or the seesaw neutrino scale. We have calculated various physical observable quantities in B decays, K decays and lepton flavor violation processes for several supersymmetric models, and have illustrated how we can distinguish different models by comparing flavor signals. We have also calculated branching ratios of tauonic decays and semi tauonic decays of B mesons in supersymmetric models and show synergy between measurements of these quantities and charged Higgs boson search at LHC.2. lepton flavor violation in the left-right symmetric modelSmall masses of neutrinos provide an important clue to possible physics beyond the standard model. In particular, if the origin of the neutrino mass generation exists at the ay scale, we can anticipate new particle discovery at the LHC as well as large enhancement of lepton flavor violation processes. As an example of such a scenario, we study relationship between tau and muon lepton flavor violation processes and neutrino mass generation mechanism in the left-right symmetric model.3. little Higgs model and dark matterIt is pointed out that the recently proposed little Higgs model can accommodate a dark matter particle if the model is extended with the T-parity. We have studied phenomenological constraints and dark matter relic abundance in this model, and have investigated a possibility of detecting cosmic positron signals from the pair annihilation of dark matter particles in our galaxy under these constraints.

1.超对称模型中的味物理研究超对称性被认为是TeV尺度下新物理的一个有希望的候选者，寻找超对称粒子是LHC实验的主要目标。如果在那里发现了超对称粒子，味物理将在探索大统一理论和/或跷跷板中微子尺度的理论中发挥重要作用。我们计算了几种超对称模型的B衰变、K衰变和轻子味破坏过程中的各种物理可观测量，并说明了如何通过比较味信号来区分不同的模型。我们还计算了超对称模型中B介子的τ介子衰变和半τ介子衰变的分支比，并显示了这些量的测量与LHC上带电希格斯玻色子搜索之间的协同作用。左-右对称模型中的轻子味破坏小质量的中微子为超越标准模型的可能物理学提供了重要线索。特别是，如果中微子质量产生的起源存在于ay尺度，我们可以预期新的粒子发现在大型强子对撞机以及轻子味破坏过程的大增强。作为这种情形的一个例子，我们在左右对称模型中研究了τ介子和μ介子轻子味破坏过程与中微子质量产生机制之间的关系.小Higgs模型与暗物质本文指出，最近提出的小Higgs模型如果用T宇称加以推广，就可以容纳一个暗物质粒子。我们已经研究了这个模型中的现象学约束和暗物质遗迹丰度，并研究了在这些约束下，从我们银河系中暗物质粒子的对湮灭中检测宇宙正电子信号的可能性。

项目成果

Status of Physics DCR

DCR物理现状

• 发表时间: 2006
• 作者: H. Itoh;S. Komine;Y. Okada;H.Itoh;Y. Okada;Y. Okada;Y.Okada;Y. Okada;Y.Okada;岡田 安弘;岡田安弘;岡田 安弘;Y. Okada;Y.Okada;Y. Okada;Y.Okada;Y. Okada;Y.Okada;Y. Okada;Y. Okada;Y.Okada;Y. Okada;Y. Okada
• 通讯作者: Y. Okada

Summary from Theory Community

理论界总结

• 发表时间: 2006
• 作者: H. Itoh;S. Komine;Y. Okada;H.Itoh;Y. Okada;Y. Okada;Y.Okada;Y. Okada;Y.Okada;岡田 安弘;岡田安弘;岡田 安弘;Y. Okada;Y.Okada;Y. Okada;Y.Okada;Y. Okada;Y.Okada;Y. Okada;Y. Okada;Y.Okada;Y. Okada;Y. Okada;Y.Okada;Y. Okada
• 通讯作者: Y. Okada

SUSY and B Physics Observables

SUSY 和 B 物理观测值

• 发表时间: 2005
• 作者: H. Itoh;S. Komine;Y. Okada;H.Itoh;Y. Okada;Y. Okada;Y.Okada;Y. Okada;Y.Okada;岡田 安弘;岡田安弘;岡田 安弘;Y. Okada;Y.Okada;Y. Okada;Y.Okada;Y. Okada;Y.Okada;Y. Okada;Y. Okada;Y.Okada;Y. Okada;Y. Okada;Y.Okada;Y. Okada;Y. Okada;Y.Okada;Y. Okada;Y.Okada;岡田 安弘;岡田安弘;Y. Okada;Y. Okada;Y.Okada;Y. Okada;Y. Okada;Y. Okada;Y. Okada
• 通讯作者: Y. Okada

A window to the TeV scale and beyond from quark and lepton flavor physics

从夸克和轻子味物理学到 TeV 尺度及更远尺度的窗口

• 发表时间: 2007
• 作者: N. Delerue;K. Fu ji i;N. Okada;S.Kanemura;T.Goto;M.Arai;N.Okada;T.Fukuyama;N.Delerue;Yasuhiro Okada;Yasuhiro Okada;Yasuhiro Okada;Yasuhiro Okada;岡田 安弘;岡田安弘;岡田 安弘;Yasuhiro Okada;岡田 安弘;Yasuhiro Okada;Yasuhiro Okada;Y. Okada;Y. Okada;Yasuhiro Okada;Y. Okada;岡田 安弘;Yasuhiro Okada;Y. Okada
• 通讯作者: Y. Okada

CP violation and CKM (Theory)

CP 破坏和 CKM（理论）

• 发表时间: 2006
• 作者: N. Delerue;K. Fu ji i;N. Okada;S.Kanemura;T.Goto;M.Arai;N.Okada;T.Fukuyama;N.Delerue;Yasuhiro Okada;Yasuhiro Okada;Yasuhiro Okada;Yasuhiro Okada;岡田 安弘;岡田安弘;岡田 安弘;Yasuhiro Okada;岡田 安弘;Yasuhiro Okada;Yasuhiro Okada;Y. Okada;Y. Okada;Yasuhiro Okada;Y. Okada;岡田 安弘;Yasuhiro Okada;Y. Okada;Yasuhiro Okada;Y. Okada;N. Okada;Yasuhiro Okada;Y. Okada;Yasuhiro Okada
• 通讯作者: Yasuhiro Okada