Local meson-baryon coupled-channels potential for the Lambda(1405)

Abstract

A local coupled-channels Kbar N-pi Sigma-pi Lambda potential is constructed, equivalently reproducing the scattering amplitude in chiral SU(3) dynamics. By analyzing the wave function of the Lambda(1405), we show the Kbar N dominance of the upper pole within the two-pole structure of the Lambda(1405). The resulting potential will be useful for investigating Kbar few-nucleon systems including their coupled channels.

Comments: 4 pages, Proceedings of International Conference on Few-Body Problems in Physics (FB22), Jul. 9-13, 2018, Caen, France