Heavy-light diquark masses from QCD sum rules and constituent diquark models of tetraquarks

R. T. Kleiv, T. G. Steele, Ailin Zhang +1

Diquarks with $J^P=0^{\pm }$, $1^{\pm }$ containing a heavy (charm or bottom) quark and a light quark are investigated using QCD Laplace sum rules. Masses are determined using appr…