Experimental and theoretical investigations on muon-to-electron conversion with the COMET experiment at J-PARC
J-PARC 的 COMET 实验对 μ 子到电子转换的实验和理论研究
基本信息
- 批准号:397660091
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Research Grants
- 财政年份:
- 资助国家:德国
- 起止时间:
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
The study of elementary particles and fundamental interactions has revealed the crucial importance of symmetries and conserved charges. For example, electric charge is exactly conserved as a result of the fundamental gauge invariance of quantum electrodynamics. Lepton number is another charge, whose conservation however is not supported by any fundamental theory or symmetry. Charged leptons arise in three flavours (electron, muon, tau), and so far no violation of lepton flavour number has been observed. In the meantime the flavour change of quarks and flavour oscillations of neutrinos have been observed. Hence it is an essential question to probe charged lepton flavour violation as well. Typical models beyond the Standard Model, like supersymmetry, leptoquarks, and other extensions of the Standard model, indeed predict such a lepton flavour violation at potentially observable rates.The COMET experiment at J-PARC is a new experiment to probe lepton flavour violation. It focuses on the muon-to-electron conversion process on nuclei to search for this phenomenon. A dramatic improvement in sensitivity by 4 orders of magnitude is envisaged; currently no other experimental approach has such an improvement in sensitivity to new phenomena. Both applicants are collaboration members of COMET, and COMET will start datataking within the grant period, making this grant particularly timely. For the same reason, both applicants will perform shifts at the COMET experiment during the grant period. In this grant application sophisticated explorations of various supersymmetric and non-supersymmetric models with respect to the mentioned lepton-flavour violating process are performed. The phenomenological studies are accompanied by quantum field theoretical studies of required effective field theories and the construction of general computer software tools. A major experimental responsibility of the TU Dresden COMET collaborators is the muon capture normalisation measurement of COMET. The idea to determine this number is to measure muonic X-ray lines using a germanium detector. The respective development and commissioning and the final installation at JPARC is done by the Dresden group. In addition the Dresden group is responsible for the development and installation of the muon target. This TU Dresden work of this grant period will contribute significantly to the success of the COMET phase-I experiment. The collaboration has been created within the DFG-supported "strategic partnership" between Osaka (the leading university of the COMET experiment) and Dresden and within the excellence concept of TU Dresden.
对基本粒子和基本相互作用的研究揭示了对称性和守恒电荷的重要性。例如,由于量子电动力学的基本规范不变性,电荷完全守恒。轻子数是另一种电荷,但它的守恒性没有得到任何基本理论或对称性的支持。带电轻子有三种味道(电子、μ子、τ子),到目前为止还没有观察到轻子味道数的破坏。同时还观察到夸克的味变和中微子的味振荡。因此,探讨带电轻子味破坏也是一个重要的问题。标准模型之外的典型模型,如超对称性,leptoquark,和其他标准模型的扩展,确实预言了这样一个轻子味破坏在潜在的可观测率。在J-PARC的彗星实验是一个新的实验来探测轻子味破坏。它集中在原子核上的μ子到电子的转换过程中寻找这种现象。设想灵敏度显著提高4个数量级;目前没有其他实验方法对新现象的灵敏度有这样的提高。这两个申请人都是COMET的合作成员,COMET将在赠款期内开始数据采集,使这笔赠款特别及时。出于同样的原因,两个申请人将在赠款期间在COMET实验中轮班。在这个资助申请复杂的探索各种超对称和非超对称模型相对于上述轻子味破坏过程进行。唯象学研究伴随着所需的有效场论的量子场论研究和通用计算机软件工具的构建。德累斯顿工业大学COMET合作者的一个主要实验责任是COMET的μ子捕获归一化测量。确定这个数字的想法是使用锗探测器测量μ子X射线线。相应的开发和调试以及在JPARC的最终安装由德累斯顿集团完成。此外,德累斯顿小组还负责开发和安装μ子靶。德累斯顿工业大学在这一资助期内的工作将为彗星第一阶段实验的成功做出重大贡献。该合作是在DFG支持的大坂(COMET实验的领先大学)和德累斯顿之间的“战略伙伴关系”以及德累斯顿工业大学的卓越理念中建立的。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Professor Dr. Dominik Stöckinger其他文献
Professor Dr. Dominik Stöckinger的其他文献
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{{ truncateString('Professor Dr. Dominik Stöckinger', 18)}}的其他基金
Phenomenology of supersymmetry with R-symmetry
具有 R 对称性的超对称现象学
- 批准号:
253029642 - 财政年份:2014
- 资助金额:
-- - 项目类别:
Research Grants
Theoretical investigations in preparation and for the next generation of measurements of the magnetic moment of the muon
准备和下一代μ子磁矩测量的理论研究
- 批准号:
264075790 - 财政年份:2014
- 资助金额:
-- - 项目类别:
Research Grants
Improving the understanding and the applicability of regularization by dimensional reduction for ultraviolet and infrared divergences
通过对紫外和红外发散进行降维来提高对正则化的理解和适用性
- 批准号:
192290006 - 财政年份:2011
- 资助金额:
-- - 项目类别:
Research Grants
Das anomale magnetische Moment (g-2) des Myons - Präzisionsanalyse in supersymmetrischen Modellen
μ子的反常磁矩(g-2)——超对称模型中的精度分析
- 批准号:
114605533 - 财政年份:2009
- 资助金额:
-- - 项目类别:
Research Grants
The gamma5-problem of dimensional regularization - the HVBM scheme for the electroweak Standard Model at the 2-loop level
维度正则化的 gamma5 问题 - 2 环级电弱标准模型的 HVBM 方案
- 批准号:
442084807 - 财政年份:
- 资助金额:
-- - 项目类别:
Research Grants
Studies of supersymmetric and non-supersymmetric models: Development of FlexibleSUSY and phenomenological applications
超对称和非超对称模型的研究:FlexibleSUSY 的开发和唯象应用
- 批准号:
190169142 - 财政年份:
- 资助金额:
-- - 项目类别:
Research Grants
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