Exploring supersymmetry and its breaking with flavor physics

探索超对称性及其与风味物理学的打破

• 批准号: 15540272
• 负责人: TANAKA Minoru
• 金额: $ 2.24万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15540272/
• 关键词: B meson; Supersymmetry; B factory; charged Higgs boson; B→φKs; SU(S); neutrino oscillation; cosmic neutrino background; ニュートリノ混合; 宇宙ニュートリノ; 暗黒物質; 宇宙背景輻射; B→φKs

The minimal supergravity model, the supersymmetric SU(5) grand unified model with right-handed neu- trinos, and a supersymmetric model with U(2) flavor symmetry were studied in order to explore flavor structure of supersymmetry breaking.Several processes relevant for the flavor physics were analyzed in these models. In the・quark sector, we examined the B_d-B_d mixing, the B_3-B_5, mixing, the CP violation in the K^0-K^0 mixing, B_d→φK_s, b→Sγ, and b→dγ. As for the lepton sector, we calculated branching ratios of decay processes such as μ→eγ, τ→μγ, and τ→eγ. We took into account recent experimental results like the neutrino oscillation in our study.Our research unveiled the following facts. The minimal supergravity model exhibits virtually no new flavor phenomena, and the allowed parameter region of this model is tightly constrained, employing the recent experimental result on the B^s-R^s mixing in addition to other experimental bounds. Substantial deviations from the standard model are possible in the supersymmetric SU(5) grand unified model. with right-handed neutrinos, if the right-handed neutrinos are not degenerated. Moreover, flavor signals in the lepton sector show several patterns in this model, depending on the mixing in the scalar lepton sector. As for the supersymmetric model with U(2) flavor symmetry, though flavor signals may significantly differ from the standard model, the prediction of the model is heavily contingent on details of the model.In addition to the above study, we carried out researches concerning effects of the charged Higgs boson on the semitauonic B decay and implications of the neutrino mixing on the interaction of the cosmic neutrino background with macroscopic matter.

研究了最小的超级重力模型，具有右手旋转的超对称性SU（5）大型统一模型，并研究了带有U（2）风味对称性的超对称模型，以探索这些模型中与风味相关的超对称性破裂的风味结构。在夸克行业中，我们检查了B_D-B_D混合，B_3-B_5，混合，k^0-k^0混合中的CP违规，B_D→φK_S，B→Sγ和B→Dγ。至于Lepton部门，我们计算了衰减过程的分支比，例如μ→Eγ，τ→μγ和τ→Eγ。我们考虑了最新的实验结果，例如我们的研究中的中性振荡。我们的研究揭示了以下事实。最小的超级重力模型几乎没有新的风味现象，并且该模型的允许参数区域受到严格限制，除了其他实验界，还采用了最近对B^S-R^S混合的实验结果。在超对称SU（5）大统一模型中，与标准模型的实质偏差是可能的。使用右手神经元，如果右手神经元没有退化。此外，Lepton部门中的风味信号在该模型中显示了几种模式，具体取决于标量Lepton部门的混合。至于带有U（2）风味对称性的超对称模型，尽管风味信号可能与标准模型明显不同，但该模型的预测与模型的细节很大程度上取决于该模型的细节。在上述研究中，我们进行了有关电荷Higgs boson boson boson boson bosimist in ne cosm Miscormiss oferactiass controctions introction oferactiass introction oferacron oferact oferact of introction oferact of neuron oferactions of on neuron ocars of of on neuron的研究的效果。 事情。

项目成果

Expluring flavor structure of supersymmetry brealcing from rave B decars and the unitarity triausle

从 rave B decars 和幺正性 triausle 探索超对称断裂的风味结构

• 发表时间: 2004
• 期刊: Physical Review D70
• 作者: J.Hewett;J.Hewett(ed.);J.Hewett;T.Goto
• 通讯作者: T.Goto

Exploring flavor structure of supersyrmetry breaking from rare B decays and unitarity triangle

探索打破罕见 B 衰变和酉三角的超对称风味结构

• 发表时间: 2004
• 期刊: Physical Review D70
• 作者: J.Hewett;J.Hewett(ed.);J.Hewett;T.Goto;T.Goto et al.;T.Goto
• 通讯作者: T.Goto

Exploring flavor structure of supersymmetry breaking from rare B decays and the unitarity triangle

• DOI: 10.1103/physrevd.70.035012
• 发表时间: 2003-06
• 期刊: Physical Review D
• 影响因子: 5
• 作者: T. Goto;Y. Okada;Y. Shimizu;T. Shindou;Minoru Tanaka

The Discovery Potential of a Super B Factory

超级 B 工厂的发现潜力

• 发表时间: 2005
• 期刊: SLAC-R 709
• 作者: J.Hewett