Speaker
Sinya Aoki
(Yukawa Institute for Theoretical Physics, Kyoto University)
Description
In this talk, we discuss an issue related to the left-hand cut in the scattering amplitude, which has been recently pointed out to be relevant for an analysis on the nature of the tetra quark state $T_{cc}$.
We first discuss a relation between the left-hand cut from the Yukawa potential in non-relativistic quantum field theory and $t$-channel cut in the S-matrix for a relativistic quantum filed theory.
We then demonstrate how the issue appears in the infinite volume limit from finite volume simulations.
We finally discuss how we treat the left-hand cut in the HAL QCD potential method.
Primary authors
Sinya Aoki
(Yukawa Institute for Theoretical Physics, Kyoto University)
Takumi Doi
(RIKEN)
Yan Lyu
(RIKEN)
