The 8th International Workshop on Chiral Dynamics 2015

*Leading Talk* Evidence that the Lambda(1405) is a molecular antikaon-nucleon bound state.

2 lug 2015, 16:20

30m

Room PS4 (Building E, Polo Fibonacci, Pisa)

Talk Hadron Structure and Meson-Baryon Interaction Working Group Parallel Session 6 - Hadron Structure & Meson-Baryon Interaction WG

Relatore

Waseem Kamleh (University of Adelaide)

Descrizione

We present lattice QCD results showing that the strange magnetic form factor of the Lambda(1405) vanishes, signaling the formation of an antikaon–nucleon. Together with a Hamiltonian effective-field-theory model analysis of the lattice QCD energy levels, this strongly suggests that the structure is dominated by a bound antikaon-nucleon component. This result clarifies that not all states occurring in nature can be described within a simple quark model framework and points to the existence of exotic molecular meson-nucleon bound states.

Materiali di presentazione

Slides

CD2015_KAMLEH_Waseem.pdf