Speaker
Dr
Anthony Francis
(York University)
Description
Having introduced the ensembles and basic spectrum in Part I, we focus on results for a doubly heavy tetraquark candidate, $qq\bar Q \bar Q$. Based on phenomenological observations regarding heavy baryon systems, we motivate two possible lattice interpolating operators: a diquark-anti diquark and a meson-meson. We show these operators exhibit good behaviour both in terms of lattice QCD and their phenomenological interpretation. In particular we study the $qq\bar b \bar b$, $qq\bar c \bar b$ and $qq\bar c \bar c$ with $qq=ud,us$ flavor combinations and analyze their binding. In the chiral limit, at finite lattice spacing, we find strong indications for binding of the $qq=ud$ tetraquark candidates. We comment on possible search windows for experimental confirmation.
Primary authors
Dr
Anthony Francis
(York University)
Kim Maltman
(York University)
Randy Lewis
(York University)
Dr
Renwick J. Hudspith
(York University)
