Testing CPT And Antigravity With Trapped Antihydrogen At ALPHA
Testing CPT And Antigravity With Trapped Antihydrogen At ALPHA
复制标题
在 ALPHA 用捕获的反氢测试 CPT 和反重力
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
A. Capra
中科院分区：
文献类型：
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作者：
A. Capra
高精度的反氢实验允许对自然界的基本理论描述进行测试。这些实验是在阿尔法装置上进行的，在那里产生超低能量的反氢，并将其限制在磁捕获器中。反氢光谱是对标准模型最重要的对称性之一的CPT不变性的精确测试的主要兴趣。特别是，氢的1s-2s跃迁频率是物理学中已知的最精确的量，因此用反氢测量相同的量提供了物质和反物质之间最严格的比较。反物质引力是一个开放的实验问题，为了测试广义相对论的基础，应该直接解决这个问题。本文介绍了产生、捕获、检测和识别反氢的方法，并首次高精度地测量了反氢的性质，即反原子的电中性。这种测量也构成了正电子电荷测量值的三倍改进。然后将重点转移到拟议的测量反氢引力加速度的实验上，特别关注反氢探测器。
High precision antihydrogen experiments allow tests of fundamental theoretical descriptions of nature. These experiments are performed with the ALPHA apparatus, where ultra-low energy antihydrogen is produced and confined in a magnetic trap. Antihydrogen spectroscopy is of primary interest for precision tests of CPT invariance one of the most important symmetries of the Standard Model. In particular, the 1S-2S transition frequency in hydrogen is the most precisely known quantity in Physics thus measuring the same quantity with antihydrogen provides the most stringent comparison between matter and antimatter. Antimatter gravity is an open experimental question that deserves to be directly addressed in order to test the foundation of the General Theory of Relativity. Methods to produce, trap, detect and identify antihydrogen are presented in this work, alongside the first high precision measurement of an antihydrogen property, i.e., the electric neutrality of an antiatom. This measurement also constitutes a three-fold improvement to the measured value of the positron charge. The focus is then shifted to the proposed experiment to measure the antihydrogen gravitational acceleration, with particular attention to the antihydrogen detector.
影响因子：
8.6
作者：
Andresen, G. B.;Ashkezari, M. D.;Yamazaki, Y.
通讯作者：
Yamazaki, Y.
基于八极诱导弹道损失的新型反质子径向诊断
影响因子：
2.2
作者：
Andresen G
通讯作者：
Andresen G