Kaon-nucleon scattering from chiral Lagrangians - Lee, C.-H.; Jung, H.; Min, D.-P.; Rho, M. (Elsevier)
The s-wave K^+/-N scattering amplitude is computed up to one-loop order corresponding to next-to-next-to-leading order (or N^2LO in short) in chiral perturbation with a heavy-baryon effective chiral Lagrangian. Constraining the low-energy constants by on-shell scattering lengths, we predict the off-shell s-wave K^- N scattering amplitudes relevant to kaonic atoms and K^- condensation in ''nuclear star'' matter. The crossing-even one-loop corrections are found to play an important role in determining the higher-order chiral corrections.
http://dx.doi.org/10.1016/0370-2693(94)91185-1
Keywords: U