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Positronium Hyperfine Splitting | | Akira Miyazaki
; | | Date: |
30 Nov 2010 | | Abstract: | Positronium is an ideal system for the research of QED in the bound state.
The hyperfine splitting of positronium (Ps-HFS: about 203 GHz) is a good tool
to test QED and also sensitive to new physics beyond the Standard Model.
Previous experimental results show 3.9,$sigma$ (15 ppm) discrepancy from the
QED $mathrm{O}left(alpha ^3 ln{1/alpha}
ight)$ prediction. We point out
probable common systematic errors in all previous experiments. I measure the
Ps-HFS in two different ways. (1) A prototype run without RF system is
described first. (2) I explain a new direct Ps-HFS measurement without static
magnetic field. The present status of the optimization studies and current
design of the experiment are described. We are now taking data of a test
experiment for the observation of the direct transition. | | Source: | arXiv, 1011.6457 | | Services: | Forum | Review | PDF | Favorites | |
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