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

2018/11/26 by Kenta Miyahara, Tetsuo Hyodo, Miyahara, Kenta +3
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th) #hep-ph #nucl-th

paper · pdf · doi:10.48550/arxiv.1811.10150

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

arxiv created 2018/11/26 · arxiv updated 2018/11/27

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.

Related

• Internal structure of the Lambda(1405) resonance probed in chiral unitary amplitude
• Composite nature of Lambda(1405) from the spacial structure of KbarN system
• Two-pole nature of the Λ(1405) from lattice QCD
• The KK^* interaction in the unitary coupled-channel approximation
• Λ(1405) in the flavor SU(3) limit using a separable potential in the HAL QCD method