Collaborative Research: Equipment for and Running of the PSI MUSE Experiment

合作研究:PSI MUSE 实验的设备和运行

基本信息

  • 批准号:
    1506098
  • 负责人:
  • 金额:
    $ 6万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2015
  • 资助国家:
    美国
  • 起止时间:
    2015-09-15 至 2016-08-31
  • 项目状态:
    已结题

项目摘要

A fundamental goal of subatomic physics is the precise determination of the physical properties of subatomic particles such as the proton and neutron. The radius of the proton is one of these properties. The radius can be measured by scattering electrons, or heavier particles called muons, off protons. Another technique is to measure the energy levels of hydrogen, an atom consisting of a proton plus an electron, or muonic hydrogen, an atom consisting of a proton with the electron replaced by a muon. To date, the radius has been measured by scattering of electrons off protons, and by the energy levels of hydrogen and muonic hydrogen. The proton radius derived from the measurement of the energy levels in muonic hydrogen disagrees with the radius derived from the measurements of the energy levels in hydrogen, and with the measurements of the proton radius by scattering of electrons, an issue known as "the proton radius puzzle." The discrepancy has attracted wide attention, because it may indicate the existence of previously unobserved and unexpected differences between the interactions of muons and electrons. A dedicated MUon proton Scattering Experiment (MUSE), which will run at the Paul Scherrer Institute in Switzerland and directly compare the scattering of muons and electrons from protons, is highly anticipated by experts in the field for its potential to resolve the puzzle. This project will cover the prototyping and development of several crucial components of the MUSE experiment detectors. The project will involve the training of students and young scientists, at the undergraduate, graduate, post-doctoral, and junior faculty levels. The institutions involved in the project have trained large numbers of students of each type, including from minority populations. The training they have received in the process of doing basic research has led to careers in a variety of areas, from medical physics to national security, in addition to continued work in fundamental physics research. The MUSE experiment will broaden the perspective of American students by having them work in an international collaboration at an international laboratory, which will prepare them effectively to become prominent global scientists of the next generation. With the broad interest in the proton radius puzzle, MUSE has the potential to be broadly inspirational beyond the current scientific community.
亚原子物理学的一个基本目标是精确确定质子和中子等亚原子粒子的物理性质。质子的半径就是这些性质之一。这个半径可以通过将电子或更重的粒子从质子上散射出来来测量。另一种技术是测量氢的能级,氢是由一个质子加一个电子组成的原子,或者是介子氢,是由一个质子组成的原子,其中的电子被介子取代。到目前为止,半径是通过质子对电子的散射以及氢和介子氢的能级来测量的。由测量介子氢中的能级得到的质子半径与由测量氢中的能级得出的半径不一致,也与通过电子散射得到的质子半径的测量结果不一致,这一问题被称为“质子半径之谜”。这一差异引起了广泛关注,因为它可能表明,在介子和电子的相互作用之间存在以前未被观察到的和意想不到的差异。一项专门的Muon质子散射实验(MUSE)将在瑞士的Paul Scherrer研究所运行,直接比较质子对Muon和电子的散射,该领域的专家非常期待它能解开这个谜团。该项目将包括MUSE实验探测器的几个关键部件的原型和开发。该项目将包括对本科生、研究生、博士后和初级教职员工的学生和青年科学家的培训。参与该项目的机构培训了大量每种类型的学生,包括来自少数群体的学生。他们在做基础研究的过程中接受的培训导致了从医学物理到国家安全等各种领域的职业生涯,此外,他们还继续从事基础物理研究。缪斯实验将拓宽美国学生的视野,让他们在国际实验室的国际合作中工作,这将有效地为他们成为下一代杰出的全球科学家做好准备。随着人们对质子半径之谜的广泛兴趣,缪斯具有超越当前科学界的广泛灵感的潜力。

项目成果

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Nikolaos Sparveris其他文献

Nikolaos Sparveris的其他文献

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{{ truncateString('Nikolaos Sparveris', 18)}}的其他基金

Collaborative Research: Equipment for the PSI MUSE Experiment
合作研究:PSI MUSE 实验设备
  • 批准号:
    1614756
  • 财政年份:
    2016
  • 资助金额:
    $ 6万
  • 项目类别:
    Continuing Grant
Studies of Hadronic Structure
强子结构研究
  • 批准号:
    1305536
  • 财政年份:
    2013
  • 资助金额:
    $ 6万
  • 项目类别:
    Continuing Grant

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