Pion-photon exchange nucleon-nucleon potentials
Journal Article
·
· Physical Review. C, Nuclear Physics
- Physik Department T39, Technische Universitaet Muenchen, D-85747 Garching (Germany)
In chiral perturbation theory, the dominant next-to-leading-order correction to the {pi}{gamma}-exchange NN-potential proportional to the large isovector magnetic moment {kappa}{sub v}=4.7 of the nucleon is calculated. The corresponding spin-spin and tensor potentials V{sup {approx}}{sub S,T}(r) in coordinate space have a very simple analytical form. At long distances, r{approx_equal}2 fm, these potentials are of similar size (but opposite in sign) as the leading-order {pi}{gamma}-exchange potentials. Effects from virtual {delta}-isobar excitation are also considered, as well as other isospin-breaking contributions to the 2{pi}-exchange NN potential induced by additional one-photon exchange.
- OSTI ID:
- 20771418
- Journal Information:
- Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 4 Vol. 73; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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