June 29, 2015 to July 3, 2015
Europe/Rome timezone

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

Jul 2, 2015, 4:20 PM
Room PS4 (Building E, Polo Fibonacci, Pisa)

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


Waseem Kamleh (University of Adelaide)


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.

Primary author

Waseem Kamleh (University of Adelaide)

Presentation materials