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Study of events containing Z-Bosons for a better understanding of the CMS Detector and measurement of inclusive and differential cross-sections for the production of Z-Bosons in proton-proton collisions at 7 TeV centre of mass energy at the Large Hadron C

研究包含 Z 玻色子的事件，以便更好地理解 CMS 探测器，并测量包含和微分截面，以在大型强子 C 的 7 TeV 质心能量中心的质子-质子碰撞中产生 Z 玻色子

基本信息

批准号：
175501272
负责人：
Privatdozent Dr. Roger Wolf
金额：
--
依托单位：
Institut für Experimentelle Teilchenphysik (ETP)
依托单位国家：
德国
项目类别：
Research Fellowships
财政年份：
2010
资助国家：
德国
起止时间：
2009-12-31 至 2012-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/175501272?language=en
关键词：
Study events containing Bosons better

项目摘要

The standard model of particle physics is one of the best understood theories of modern science,which allows to predict very characteristic features of particle physics with highest precision. Despite of its successes it is an effective theory leaving many fundamental questions unanswered: One of themost important open questions is the one for the origin of mass of the fundamental constituents ofmatter, as well as the connection between particle physics and the cosmos and early states of theuniverse. The Large Hadron Collider (LHC) at the European Nuclear Research Center CERN hasbeen built to address theses questions. There, protons are brought to collision at center of massenergies between 7 and 14 tera electron-volt (TeV). This is the largest center of mass energy everreached so far to study the collisions of elementary particles under laboratory conditions. CMS is oneof the detectors to investigate these collisions. Events containing Z bosons are very well suited formeasurements with first data at the LHC. In the decay channel in two muons they leave clearsignatures in all components of the detector and are relatively easy to reconstruct. They are thereforewell suited to arrive at a better understanding of the CMS detector during the startup of data taking. Allnecessary ingredients for a measurement of inclusive and differential cross section measurementsmay be obtained from the data itself without help of the simulation. In the context of the introducedresearch project events containing Z bosons shall be investigated exploring first data. These studiesshall lead to first measurements of the production of Z bosons at the LHC, which is one of themilestones on the quest for more complex measurements like the production of top quarks or thesearch for the Higgs boson or physics beyond the SM.

粒子物理学的标准模型是现代科学中最容易理解的理论之一，它可以以最高精度预测粒子物理学的非常典型的特征。尽管取得了成功，但它是一种有效的理论，但仍有许多基本问题没有得到解答：最重要的开放问题之一是物质基本成分的质量起源，以及粒子物理学与宇宙和宇宙早期状态之间的联系。欧洲核研究中心 CERN 的大型强子对撞机 (LHC) 就是为了解决这些问题而建造的。在那里，质子在 7 到 14 太电子伏 (TeV) 的质能中心发生碰撞。这是迄今为止在实验室条件下研究基本粒子碰撞所达到的最大质能中心。 CMS 是调查这些碰撞的探测器之一。包含 Z 玻色子的事件非常适合用大型强子对撞机的第一批数据进行测量。在两个 μ 子的衰变通道中，它们在探测器的所有组件中留下了清晰的特征，并且相对容易重建。因此，它们非常适合在数据采集启动期间更好地了解 CMS 检测器。用于测量包容性和微分横截面测量的所有必要成分可以从数据本身获得，而不需要模拟的帮助。在所介绍的研究项目的背景下，应调查包含 Z 玻色子的事件，探索第一批数据。这些研究将导致在大型强子对撞机上首次测量 Z 玻色子的产生，这是寻求更复杂测量的里程碑之一，例如顶夸克的产生或寻找希格斯玻色子或超越 SM 的物理。