Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1997-10-28
Phys.Rev.Lett.80:4386-4389,1998
Physics
Nuclear Physics
Nuclear Theory
10 pages, latex, 1 figure -- Submitted to Phys. Rev. Lett. -- epsfig.sty required
Scientific paper
10.1103/PhysRevLett.80.4386
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, $V_{\pi \gamma}$, 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 $V_{\pi \gamma}$ 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.
de Swart J. J.
Friar J. L.
Goldman Tamar
Kolck Ubirajara van
Rentmeester M. C. M.
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