The doubly charmed pseudoscalar tetraquarks Tcc;sbarsbar++ and Tcc;dbarsbar++
Abstract
The mass and coupling of the doubly charmed JP =0- diquark-antidiquark states Tcc;sbarsbar++ and Tcc;dbarsbar++ that bear two units of the electric charge are calculated by means of QCD two-point sum rule method. Computations are carried out by taking into account vacuum condensates up to and including terms of tenth dimension. The dominant S-wave decays of these tetraquarks to a pair of conventional Ds+ Ds0*+ (2317) and D+Ds0*+ (2317) mesons are explored using QCD three-point sum rule approach, and their widths are found. The obtained results mT = (4390 ± 150)MeVand Γ = (302 ± 113MeV) for the mass and width of the state Tcc;sbarsbar++, as well as spectroscopic parameters m∼T = (4265 ± 140)MeV and Γ ∼ = (171 ± 52)MeV of the tetraquark Tcc;dbarsbar++ may be useful in experimental studies of exotic resonances.
- Publication:
-
Nuclear Physics B
- Pub Date:
- February 2019
- DOI:
- 10.1016/j.nuclphysb.2018.12.021
- arXiv:
- arXiv:1806.04447
- Bibcode:
- 2019NuPhB.939..130A
- Keywords:
-
- High Energy Physics - Phenomenology;
- High Energy Physics - Experiment;
- High Energy Physics - Lattice
- E-Print:
- 10 Pages, 4 Figures and 1 Table