Measurement of Positronium hyperfine splitting with quantum oscillation

Details Measurement of Positronium hyperfine splitting with quantum oscillation Measurement of Positronium hyperfine splitting with quantum oscillation

2010-02-24

arxiv.org/abs/1002.4567v3

J.Phys.Conf.Ser.225:012045,2010; Phys.Lett.B697:121-126,2011

Physics

Atomic Physics

4 figures accepted by Phys. Lett. B

Scientific paper

10.1088/1742-6596/225/1/012045 1

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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