论文标题
超低中子
Ultracold Neutrons
论文作者
论文摘要
超电压中子（UCN）是可以在实验设置中存储几分钟的游离中子。中子的一些最重要的特性，例如其微小的永久性电偶极矩及其β衰变寿命，最好用UCN测量。还寻找有动力但未知的动机，但正在与UCN进行假设的其他互动。从粒子物理学到宇宙学领域，这种测量在低能，精度物理学领域可能具有很大的影响。大多数实验都是统计限制的，需要高强度的UCN来源。 PSI的UCN消息来源位于该领域的最前沿，也是国际NEDM合作的所在地及其对中子电动偶极时刻的世界领先的搜索。本文旨在使用强调PSI的活动的超低中子进行有趣的研究概述，其中包括NEDM协作率先启用的各种物理侧面 - 分析。
Ultracold neutrons (UCN) are free neutrons that can be stored in experimental setups for several minutes. Some of the most important properties of the neutron, such as its tiny permanent electric dipole moment and its beta decay lifetime, are best measured with UCN. Also searches for well motivated but yet unknown, hypothetical additional interactions are being pursued with UCN. Such measurements in the field of low-energy, precision physics may have far reaching implications from particle physics to cosmology. Most experiments are statistics limited and need high-intensity UCN sources. The UCN source at PSI is at the forefront of the field and home to the international nEDM collaboration and its world-leading search for the neutron electric dipole moment. This article aims at giving an overview of the fascinating research using ultracold neutrons emphasizing on activities at PSI including various physics side-analyses which were pioneered by the nEDM collaboration.
