We search for possibly existent bound states in the heavy-light tetraquark channels with quark content $ \bar{ b}\bar{ b}ud $, $ \bar{ b}\bar{ b}us $ and $ \bar{ b}\bar{ c}ud $ using lattice QCD. We carry out calculations on several gauge link ensembles with $ N_f=2+1 $ flavours of domain-wall fermions and consider a basis of local and non-local interpolators. Besides extracting the energy spectrum from the correlation matrices, we also perform a L\"uscher analysis to extrapolate our results to infinite volume.
Categories: hep-lat