학술논문
Measurement of the Principal Quantum Number Distribution in a Beam of Antihydrogen Atoms
Document Type
Working Paper
Author
Kolbinger, B.; Amsler, C.; Cuendis, S. Arguedas; Breuker, H.; Capon, A.; Costantini, G.; Dupré, P.; Fleck, M.; Gligorova, A.; Higaki, H.; Kanai, Y.; Kletzl, V.; Kuroda, N.; Lanz, A.; Leali, M.; Mäckel, V.; Malbrunot, C.; Mascagna, V.; Massiczek, O.; Matsuda, Y.; Murtagh, D. J.; Nagata, Y.; Nanda, A.; Nowak, L.; Radics, B.; Sauerzopf, C.; Simon, M. C.; Tajima, M.; Torii, H. A.; Uggerhøj, U.; Ulmer, S.; Venturelli, L.; Weiser, A.; Wiesinger, M.; Widmann, E.; Wolz, T.; Yamazaki, Y.; Zmeskal, J.
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Subject
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Abstract
The 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 of 10-6 or 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.
Comment: 18 pages, 10 figures
Comment: 18 pages, 10 figures