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arXiv · 1002.4567

Measurement of Positronium hyperfine splitting with quantum oscillation

Y. Sasaki·A. Miyazaki·A. Ishida·T. Namba·S. Asai·T. Kobayashi·H. Saito·K. Tanaka·A. Yamamoto
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Abstract

Interference between different energy eigenstates in a quantum system results in an oscillation with a frequency which is proportional to the difference in energy between the states. Such an oscillation is observable in polarized positronium when it is placed in a magnetic field. In order to measure the hyperfine splitting of positronium, we perform the precise measurement of this oscillation using a high quality superconducting magnet and fast photon-detectors. A result of $203.324 \pm 0.039\rm{~(stat.)} \pm 0.015\rm{(~sys.)}$~GHz is obtained which is consistent with both theoretical calculations and previous precise measurements.

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Y. Sasaki, A. Miyazaki, A. Ishida, T. Namba, S. Asai, T. Kobayashi, H. Saito, K. Tanaka, A. Yamamoto. 2010-11-25. Measurement of Positronium hyperfine splitting with quantum oscillation. https://doi.org/10.1088/1742-6596%2F225%2F1%2F012045%2010.1016%2Fj.physletb.2011.01.052

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