Lattice determination of $I=0$ and 2 $\pi \pi$ scattering phase shifts with a physical pion mass

T. Blum, P. A. Boyle, M. Bruno +10

Phase shifts for $s$-wave $\pi \pi$ scattering in both the $I=0$ and $I=2$ channels are determined from a lattice QCD calculation performed on 741 gauge configurations obeying G-parity…