Potential NRQED: The Positronium Case

Details Potential NRQED: The Positronium Case Potential NRQED: The Positronium Case

1998-05-22

arxiv.org/abs/hep-ph/9805424v2

Phys.Rev. D59 (1999) 016005

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, LaTeX, 1 ps file with 5 figures. One reference added. Minor changes to match with version to be published in Phys. R

Scientific paper

10.1103/PhysRevD.59.016005

We discuss in detail potential NRQED (pNRQED), a previously proposed effective field theory for ultrasoft photons. The pNRQED lagrangian for the equal mass case is presented and it is shown that it correctly reproduces the positronium spectrum at order $m\alpha^5$. The pNRQED lagrangian for the unequal mass case is also presented at the same order. Dimensional regularization is used throughout.

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