BASE: the Baryon Antibaryon Symmetry Experiment
The Baryon Antibaryon Symmetry Experiment (BASE) aims at performing a stringent test of the combined charge parity and time reversal (CPT) symmetry by comparing the magnetic moments of the proton and the antiproton with high precision. Using single particles in a Penning trap, the proton/antiproton...
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| Main Authors: | , , , , , , , , , , , , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
23 November 2015
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| In: |
European physical journal special topics
Year: 2015, Volume: 224, Issue: 16, Pages: 3055-3108 |
| ISSN: | 1951-6401 |
| DOI: | 10.1140/epjst/e2015-02607-4 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1140/epjst/e2015-02607-4
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| Author Notes: | C. Smorra, K. Blaum, L. Bojtar, M. Borchert, K.A. Franke, T. Higuchi, N. Leefer, H. Nagahama, Y. Matsuda, A. Mooser, M. Niemann, C. Ospelkaus, W. Quint, G. Schneider, S. Sellner, T. Tanaka, S. Van Gorp, J. Walz, Y. Yamazaki, and S. Ulmer |
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| 520 | |a The Baryon Antibaryon Symmetry Experiment (BASE) aims at performing a stringent test of the combined charge parity and time reversal (CPT) symmetry by comparing the magnetic moments of the proton and the antiproton with high precision. Using single particles in a Penning trap, the proton/antiproton g-factors, i.e. the magnetic moment in units of the nuclear magneton, are determined by measuring the respective ratio of the spin-precession frequency to the cyclotron frequency. The spin precession frequency is measured by non-destructive detection of spin quantum transitions using the continuous Stern-Gerlach effect, and the cyclotron frequency is determined from the particle*s motional eigenfrequencies in the Penning trap using the invariance theorem. By application of the double Penning-trap method we expect that in our measurements a fractional precision of δg/g 10−9 can be achieved. The successful application of this method to the antiproton will consist a factor 1000 improvement in the fractional precision of its magnetic moment. The BASE collaboration has constructed and commissioned a new experiment at the Antiproton Decelerator (AD) of CERN. This article describes and summarizes the physical and technical aspects of this new experiment. | ||
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| 700 | 1 | |a Borchert, M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Franke, K.A. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Higuchi, T. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Leefer, N. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Nagahama, H. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Matsuda, Y. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Mooser, A. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Niemann, M. |e VerfasserIn |4 aut | |
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| 700 | 1 | |a Yamazaki, Y. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Ulmer, S. |e VerfasserIn |4 aut | |
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