Speaker
Tianle Wang
(Columbia University)
Description
The pi-pi scattering phase shifts for both the s-wave I=0 and I=2 channels are determined from a lattice calculation performed on 741 gauge configurations obeying G-parity boundary conditions with a physical pion mass. The phase shifts are determined for both stationary and moving pi-pi systems, at four different center of mass momenta. We implement three interpolating operators including a sigma operator. We use both correlated fitting and the generalized eigenvalue treatment and compare these two methods. A detailed systematic error analysis is included as well as a comparison with the prediction of Roy's equation.
Author
Tianle Wang
(Columbia University)
Co-author
Christopher Kelly
(Columbia University)
