Lambda(1405) in chiral SU(3) dynamics
High Energy Physics - Phenomenology
2008-11-07 v2 Nuclear Theory
Abstract
We discuss several aspects of the Lambda(1405) resonance in relation to the recent theoretical developments in chiral dynamics. We derive an effective single-channel KbarK N interaction based on chiral SU(3) coupled-channel approach, emphasizing the important role of the pi Sigma channel and the structure of the Lambda(1405) in Kbar N phenomenology. In order to clarify the structure of the resonance, we study the behavior with the number of colors (Nc) of the poles associated with the Lambda(1405), and argue the physical meaning of the renormalization procedure.
Cite
@article{arxiv.0802.2212,
title = {Lambda(1405) in chiral SU(3) dynamics},
author = {Tetsuo Hyodo and Wolfram Weise and Daisuke Jido and Luis Roca and Atsushi Hosaka},
journal= {arXiv preprint arXiv:0802.2212},
year = {2008}
}
Comments
4 pages, no figure, Talk given at Chiral Symmetry in Hadron and Nuclear Physics (Chiral07), November 13-16, 2007, Osaka Univ., Japan. v2: Typos corrected