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Electromagnetic Corrections to the One-Pion-Exchange Potential

U. van Kolck·M. C. M. Rentmeester·J. L. Friar·T. Goldman·J. J. de Swart
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Abstract

Leading-order electromagnetic loop corrections to the one-pion-exchange potential are computed within the framework of chiral perturbation theory. These corrections generate an effective nucleon-nucleon potential, $V_{πγ}$, which supplements the sum of OPEP and the nucleon-nucleon Coulomb potential. This potential is charge dependent and its construction is demonstrated to be gauge invariant. The potential $V_{πγ}$ has been included in the Nijmegen partial-wave analysis of np data. A particular renormalization scheme is chosen that leads to a negligible change in the charged-piNN coupling constant and in the np 1S0 scattering length and effective range.

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U. van Kolck, M. C. M. Rentmeester, J. L. Friar, T. Goldman, J. J. de Swart. 1997-10-28. Electromagnetic Corrections to the One-Pion-Exchange Potential. https://doi.org/10.1103/physrevlett.80.4386

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