Effective Kbar N interaction and role of chiral symmetry
Tetsuo Hyodo (Tokyo Inst. Tech.), Wolfram Weise (TU Muenchen)
TL;DR
This paper investigates the influence of chiral SU(3) symmetry on kaon-nucleon interactions, deriving an effective potential that highlights the importance of pi Sigma attraction in understanding the Lambda(1405) resonance and kaonic nuclei.
Contribution
It introduces a chiral symmetry-based effective Kbar N potential and explores its implications for the structure of Lambda(1405) and kaonic nuclear systems.
Findings
Pi Sigma interaction is strongly attractive.
Effective potential impacts understanding of Lambda(1405).
Implications for kaonic nuclei structure.
Abstract
We study the consequence of chiral SU(3) symmetry in the kaon-nucleon phenomenology, by deriving the effective single-channel KbarK N potential. It turns out that the pi Sigma interaction is strongly attractive and plays an important role for the structure of the Lambda(1405) resonance. We discuss the implication of effective potential for the few-body kaonic nuclei.
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