Argonne Physics Division Seminar - 15 June 2015

3:30 PM, Building 203, Conference Room R-150

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 π-K,
η-K coupled system. Utilising 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 meson-meson 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.

Argonne Physics Division Seminar Schedule