Periodic Pion-Pion Scattering at the Physical Point: Update
February 04, 2020
August 27, 2020
We present updated results on the scattering of pseudoscalar, vector, and scalar mesons on a physical pion mass, 2+1 flavor mobius-DWF, ensemble with periodic boundary conditions (PBCs) generated by the RBC and UKQCD collaborations. Using all-to-all propagators, we produce thousands of correlator momentum combinations. Energy spectra and phase shifts, including excited states, are then extracted via the solutions of a generalized eigenvalue problem. Included in this paper will also be an overview of improved analysis techniques and a second lattice spacing. These studies are intended to serve as groundwork for a full PBC calculation of direct CP violation in kaon decays.
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