Kaon-nucleon scattering from chiral Lagrangians

  • Lee C
  • Jung H
  • Min D
 et al. 
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Abstract

The s-wave K±N scattering amplitude is computed up to one-loop order corresponding to next-to-next-to-leading order (or N2LO 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. © 1994.

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