Meson-baryon interactions and baryon resonances
Tetsuo Hyodo (Tokyo Inst. Tech.)
TL;DR
This paper reviews recent advances in meson-baryon interactions, focusing on the strangeness S=-1 sector and the Lambda(1405) resonance, highlighting developments in chiral SU(3) dynamics and experimental data integration.
Contribution
It presents a new realistic Kbar N-pi Sigma interaction model based on chiral SU(3) dynamics, incorporating recent precise measurements of kaonic hydrogen.
Findings
Successful construction of a realistic Kbar N-pi Sigma interaction model
Insights into the subthreshold behavior of Kbar N interactions
Enhanced understanding of Lambda(1405) structure
Abstract
Meson-baryon interactions are the fundamental building blocks to study the structures of baryon resonances and meson properties in few-body nuclear systems. We review the recent progress in the investigation of the meson-baryon interaction in the strangeness S=-1 sector and the structure of the Lambda(1405) resonance. In particular, we present an attempt to construct a realistic Kbar N-pi Sigma interaction in chiral SU(3) dynamics in response to the precise measurement of the kaonic hydrogen, and discuss the subthreshold extrapolation of the Kbar N interaction with the information of the pi Sigma channel.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · Particle physics theoretical and experimental studies · Superconducting Materials and Applications