S-wave KN Scattering in Chiral EFT
Published:Dec 31, 2025 08:33
•1 min read
•ArXiv
Analysis
This paper investigates KN scattering using a renormalizable chiral effective field theory. The authors emphasize the importance of non-perturbative treatment at leading order and achieve a good description of the I=1 s-wave phase shifts at next-to-leading order. The analysis reveals a negative effective range, differing from some previous results. The I=0 channel shows larger uncertainties, highlighting the need for further experimental and computational studies.
Key Takeaways
- •Applies a renormalizable chiral effective field theory to KN scattering.
- •Highlights the importance of non-perturbative treatment.
- •Achieves good agreement with experimental data for I=1 s-wave phase shifts.
- •Finds a negative effective range.
- •Identifies uncertainties in the I=0 channel and calls for further research.
Reference
“The non-perturbative treatment is essential, at least at lowest order, in the SU(3) sector of $KN$ scattering.”