Positronium Hyperfine Splitting
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\, (15 ppm) discrepancy from the QED 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.
Cite
@article{arxiv.1011.6457,
title = {Positronium Hyperfine Splitting},
author = {Akira Miyazaki},
journal= {arXiv preprint arXiv:1011.6457},
year = {2010}
}
Comments
10 pages, 13 figures, a proceeding for ISSP2010 in Erice