Electromagnetic corrections to $π^-$p scattering length from pionic hydrogen

Details Electromagnetic corrections to $π^-$p scattering length from pionic hydrogen Electromagnetic corrections to $π^-$p scattering length from pionic hydrogen

2002-11-27

arxiv.org/abs/hep-ph/0211433v1

Nucl.Phys.A721:653-656,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages; PANIC02, XVIth Conference on Particles and Nuclei, Osaka, to appear in Nuclear Physics A

Scientific paper

10.1016/S0375-9474(03)01145-X

We derive a closed, model space independent, expression for the
electromagnetic correction factor $\delta $ to the scattering length $a$
extracted from a hydrogenic atom with an extended charge to order $\alpha ^2$
and $a^3$ in the limit of a short ranged hadronic interaction.

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