Structure of Lambda(1405) and threshold behavior of piSigma scattering
Yoichi Ikeda, Tetsuo Hyodo, Daisuke Jido, Hiroyuki Kamano, Toru Sato, and Koichi Yazaki
TL;DR
This paper investigates the piSigma scattering parameters and their influence on the Lambda(1405) resonance structure, emphasizing the importance of threshold behavior in understanding strangeness S=-1 meson-baryon interactions.
Contribution
It provides a detailed analysis of piSigma scattering length and effective range, highlighting their role in constraining the Lambda(1405) structure within dynamical chiral models.
Findings
piSigma threshold parameters are crucial for Lambda(1405) structure
Threshold behavior constrains KbarN subthreshold extrapolation
Off-shell dependence affects scattering amplitude analysis
Abstract
The scattering length and effective range of the piSigma channel are studied in order to characterize the strangeness S=-1 meson-baryon scattering and the Lambda(1405) resonance. We examine various off-shell dependence of the amplitude in dynamical chiral models to evaluate the threshold quantities with the constraint at the KbarN threshold. We find that the piSigma threshold parameters are important to the structure of the Lambda(1405) resonance and provide further constraints on the subthreshold extrapolation of the KbarN interaction.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.