Precision Calculations of B-Meson Decays as a Test of the Standard Model

B介子衰变的精确计算作为标准模型的检验

• 批准号: 199706233
• 负责人: Dr. Sascha Turczyk
• 金额: --
• 依托单位: Institut für Physik
• 依托单位国家: 德国
• 项目类别: Research Fellowships
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2012-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/199706233?language=en
• 关键词: Precision; Calculations; Meson; Decays; Test

With the upcoming new experiments: LHC(b) and the super flavor factories, the experimental data becomes better and better. On the one hand the luminosity is strongly increased, improving the statistics. On the other side the detectors and analytical methods are developing. In order that all these improvements lead to more precise determinations from Standard Model parameters, we have to make according progress in theory. In most observables the error stemming from theoretical calculations is at the same level or even worse than the experimental one[*] The aim is to test the Standard Model against precise data and to search in case of possible inconsistencies for new physics contribution beyond the Standard Model in all relevant areas of quark flavour physics.[*] Furthermore improvements in effective theories is a goal, especially in the vicinity of non-leptonic decays.[*] These methods should then be used, to compute higher orders in the context of the Standard Model.[*] Furthermore we can use the computations of new physics contribution, for example in the context of Minimal Flavour Violation (MFV), in order to find deviations.[*] Practical applications are given by semileptonic b u decays, rare b s transitions and the extraction of shape-functions.[*] Preparing works in my own publications, where I have learned, extended and use the above mentioned tools:[1] Dassinger, Mannel, Turczyk, JHEP 0703:087,2007[2] Dassinger, Feldmann, Mannel, Turczyk JHEP 0710:039,2007[3] Breidenbach, Feldmann, Mannel, Turczyk, Phys.Rev.D78:014022,2008[4] Turczyk, Nucl. Phys. B, Proc. Suppl. 189 (2009)[5] Bigi, Mannel, Turczyk, Uraltsev, JHEP 1004:073,2010

随着即将到来的新实验：大型强子对撞机（B）和超级香料工厂，实验数据变得越来越好。一方面，亮度大大增加，改善了统计数据。另一方面，探测器和分析方法正在发展。 为了使这些改进能够更精确地确定标准模型的参数，我们必须在理论上取得相应的进展。在大多数可观测量中，理论计算产生的误差与实验误差相同，甚至更差[*]目的是用精确的数据测试标准模型，并在夸克味物理学的所有相关领域中寻找标准模型之外的新物理贡献。[*]此外，有效理论的改进也是一个目标，特别是在非轻子衰变附近。[*]然后，这些方法应该被用来在标准模型的上下文中计算更高阶。[*]此外，我们可以使用新物理贡献的计算，例如在最小味违反（MFV）的背景下，以找到偏差。[*]通过半轻子B u衰变、稀有B s跃迁和形状函数的提取给出了实际应用。[*]在我自己的出版物中准备作品，我在其中学习、扩展和使用了上述工具：[1] Dassinger、Mannel、Turczyk、JHEP 0703：087，2007 [2] Dassinger，Feldmann，Mannel，Turczyk JHEP 0710：039，2007 [3] Brewerbach，Feldmann，Mannel，Turczyk，Phys.Rev.D78：014022，2008 [4] Turczyk，核物理B，程序增刊189 Bigi，Mannel，Turczyk，Uraltsev，JHEP 1004：073，2010