Speaker
Jeremy Green
(DESY, Zeuthen)
Description
An ongoing study of the $T_{cc}$(3875) tetraquark using lattice QCD with degenerate up, down, and strange quarks with a pion mass of roughly 420 MeV will be presented. A comprehensive set of nine ensembles with six different lattice spacings allows full control over lattice systematics and a continuum extrapolation at this unphysical point. I will discuss the challenges in obtaining the correct finite-volume spectrum and the challenges in analyzing the spectrum taking into account the longest-distance part of the $DD^*$ interaction due to pion exchange.
Author
Jeremy Green
(DESY, Zeuthen)