Open-flavor charm and bottom sq(qQ)over-bar and qq(qQ)over-bar tetraquark states

We provide comprehensive investigations for the mass spectrum of exotic open-flavor charmed/bottom sq (qc) over bar, qq (qc) over bar, sq (qb) over bar, qq (qb) over bar tetraquark states with various spin-parity assignments J(P) = 0(+), 1(+), 2(+) and 0(-), 1(-) in the framework of QCD sum rules. In the diquark configuration, we construct the diquark-antidiquark interpolating tetraquark currents using the color-antisymmetric scalar and axial-vector diquark fields. The stable mass sum rules are established in reasonable parameter working ranges, which are used to give reliable mass predictions for these tetraquark states. We obtain the mass spectra for the open-flavor charmed/bottom sq (qc) over bar, qq (qc) over bar, sq (qb) over bar, qq (qb) over bar tetraquark states with various spin-parity quantum numbers. In addition, we suggest searching for exotic doubly-charged tetraquarks, such as [sd][(uc) over bar] -> D-s(()*()-) pi(-) in future experiments at facilities such as BESIII, BelleII, PANDA, LHCb, and CMS, etc.Natural Sciences and Engineering Research Council of Canada (NSERC); National Natural Science Foundation of China [11475015, 11375024, 11222547, 11175073, 11575008, 11621131001]; 973 program; Ministry of Education of China (SRFDP) [20120211110002]; Fundamental Research Funds for the Central Universities; National Program for Support of Topnotch Youth ProfessionalsSCI(E)ARTICLE119