O(alpha^3 ln alpha) corrections to muonium and positronium hyperfine splitting
High Energy Physics - Phenomenology
2009-10-31 v2
Abstract
We compute O(alpha^3 ln alpha) relative corrections to the ground state hyperfine splitting of a QED two body bound state with different masses of constituents. The general result is then applied to muonium and positronium. In particular, a new value of the muon to electron mass ratio is derived from the muonium ground state hyperfine splitting.
Cite
@article{arxiv.hep-ph/0010131,
title = {O(alpha^3 ln alpha) corrections to muonium and positronium hyperfine splitting},
author = {Kirill Melnikov and Alexander Yelkhovsky},
journal= {arXiv preprint arXiv:hep-ph/0010131},
year = {2009}
}
Comments
4 pages, revtex