Doubly heavy tetraquarks in a chiral-diquark picture

Yonghee Kim, Makoto Oka, Kei Suzuki

Energy spectrum of doubly heavy tetraquarks, $T_{QQ}$ ($QQ\bar{q}\bar{q}$ with $Q=c,b$ and $q=u,d,s$), is studied in the potential chiral-diquark model. Using the chiral e…