Within a formulation of ππ scattering, we investigate the use of the finite-volume Hamiltonian approach to resolving scattering observables from lattice QCD spectra. We consider spectra in the centre-of-mass and moving frames for both S- and P-wave cases. Furthermore, we investigate the multi-channel case. Here we study the use of the Hamiltonian framework as a parametrization that can be fit directly to lattice spectra. Through this method, the hadron properties, such as mass, width and coupling, can be directly extracted from the lattice spectra.
@article{arxiv.1512.02771,
title = {Finite-volume Hamiltonian method for $\pi\pi$ scattering in lattice QCD},
author = {Jia-Jun Wu and T. -S. Harry Lee and Derek B. Leinweber and A. W. Thomas and Ross D. Young},
journal= {arXiv preprint arXiv:1512.02771},
year = {2016}
}
Comments
Talk given at the 10th International Workshop on the Physics of Excited Nucleons (NSTAR2015), Osaka, May 25--28 2015