Super-high Luminosity B Factory an A Its Physics

超高光度B工厂及其物理

• 批准号: 12440073
• 负责人: YAMAUCHI Masanori
• 金额: $ 5.25万
• 依托单位: High Energy Accelerator Research Organization (KEK)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12440073/
• 关键词: CP symmetry; SUSY; B mesor; ete-collision; luminosiay; FCNC; B Faceory; 粒子測定器; KEKB; Belle; CPの破れ; 衝突型加速器; フレーバー物理; CP非対称性

As a consequence of this research program, it became clearer that new physics such as supersymmetry could be investigated by increasing the luminosity of the B factory. Simulation studies were performed to investigate the experimental sensitivities to various theoretical predictions, and we found that the search for charged Higgs particle in B→Dτv decays with 5000fb^<-1> is equivalent to the direct search in LHC experiment with 100fb^<-1>. Also, the FCNC decays of B meson, B→K^*μμ, is found to be sensitive to the contribution of SUSY particles, if the forward-backward asymmetry is measured with 3000fb^<-1>. The research of the accelerator enabled us to identify the fundamental issues that have to be solved to design the storage ring to accumulate much higher beam current. Based on this result and the experience at the KEKB accelerator, it is concluded that a collider with the luminosity higher than 10^<35>. Also the research of the detector enabled us to identify the necessary R&D items to carry out an experiment at the higher luminosity beyond 10^<35>.

由于这个研究项目，人们越来越清楚地认识到，可以通过增加B工厂的光度来研究诸如超对称之类的新物理。模拟研究了实验对各种理论预测的灵敏度，发现在5000fb^<-1>的B→Dτv衰变中寻找带电希格斯粒子相当于在100fb^<-1>的LHC实验中直接搜索。另外，在3000fb^<-1>的前后不对称性下，发现B介子的FCNC衰减对SUSY粒子的贡献非常敏感。加速器的研究使我们能够确定必须解决的基本问题，以设计存储环来积累更大的束流。根据这一结果和KEKB加速器的经验，得出了一个亮度大于10^<35>的对撞机。此外，探测器的研究使我们能够确定必要的研发项目，以便在超过10^<35>的更高光度下进行实验。