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

Resonances in coupled-channel scattering from lattice QCD

Jun 29, 2015, 2:55 PM
15m
Room PS1 (Building E, Polo Fibonacci, Pisa)

Room PS1

Building E, Polo Fibonacci, Pisa

Talk Few-Body Physics Working Group Parallel Session 1 - Few-Body Physics WG

Speaker

David Wilson (Old Dominion University, Norfolk)

Description

Recently it has become possible to obtain coupled-channel scattering amplitudes using lattice QCD. Using a large basis of operators we are able to obtain a reliable finite volume spectrum describing the coupled pi-K, eta-K system. Utilizing the finite volume formalism proposed by Luescher and extended by several others, we are able to describe the spectra from each lattice symmetry group and this enables constraints to be derived for S, P and D-wave scattering. We find resonant scattering amplitudes and investigate their structure in the complex plane, finding poles that display a pattern similar to the physical K^*(892), K_0^*(1430) and K_2^*(1435) resonances.

Primary author

David Wilson (Old Dominion University, Norfolk)

Presentation materials