Measurement of the principal quantum number distribution in a beam of antihydrogen atoms
Measurement of the principal quantum number distribution in a beam of antihydrogen atoms
复制标题
反氢原子束中主量子数分布的测量
DOI：
10.1140/epjd/s10053-021-00101-y
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Nanda A
中科院分区：
文献类型：
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作者：
Kolbinger B.;Amsler C.;Cuendis S. Arguedas;Breuker H.;Capon A.;Costantini G.;Dupre P.;Fleck M.;Gligorova A.;Higaki H.;Kanai Y.;Kletzl V.;Kuroda N.;Lanz A.;Leali M.;Maeckel V.;Malbrunot C.;Mascagna V.;Massiczek O.;Matsuda Y.;Murtagh D. J.;Nagata Y.;Nanda A
ASACUSA（利用慢反质子的原子光谱学和碰撞）合作计划在CERN反质子减速器上测量反氢原子束的基态超精细分裂，以更好地测试物质和反物质之间的基本CPT（电荷共轭、宇称变换和时间反转的组合）对称性。这个具有挑战性的目标需要具有足够数量的基态反氢原子的极化反氢束。本文介绍了在几mT的低磁场环境中首次测量反氢原子的量子态分布。此外，还讨论了用于识别反氢事件的数据驱动机器学习分析。图形摘要
AbstractThe ASACUSA (Atomic Spectroscopy And Collisions Using Slow Antiprotons) collaboration plans to measure the ground-state hyperfine splitting of antihydrogen in a beam at the CERN Antiproton Decelerator with initial relative precision ofor better, to test the fundamental CPT (combination of charge conjugation, parity transformation and time reversal) symmetry between matter and antimatter. This challenging goal requires a polarised antihydrogen beam with a sufficient number of antihydrogen atoms in the ground state. The first measurement of the quantum state distribution of antihydrogen atoms in a low magnetic field environment of a few mT is described. Furthermore, the data-driven machine learning analysis to identify antihydrogen events is discussed.Graphic Abstract