Speaker
Ramón Merino
(Universidad de Granada)
Description
Lattice QCD computations using staggered quarks are affected by taste breaking and rooting effects that complicate the extraction of scattering amplitudes from lattice data. As a first step towards developing a scattering formalism for staggered quarks, we study $\pi-\pi$ scattering using next-to-leading order Staggered Chiral Perturbation Theory (SChPT) for generic incoming and outgoing pion tastes. This allows us to systematically quantify the impact of both taste breaking and rooting on the scattering amplitude, and on the finite volume energy levels. We focus on the $I=2$ channel, with the extension to the remaining isospin channels currently in progress.
Authors
Dr
Adeilton Dean Marques Valois
(University of Granada)
Aida El-Khadra
(University of Illinois Urbana-Champaign)
Elvira Gamiz
(University of Granada)
Mingwei Dai
(University of Illinois Urbana-Champaign)
Ramón Merino
(Universidad de Granada)
Shaun Lahert