Mass formulas for single-charm tetraquarks with Fermi-Breit hyperfine interaction
Abstract
In this paper we present the main results of our investigation of the
cq
q
¯
q
¯
single-charm scalar tetraquarks and their SU(3)
F
representations:
15
¯
S
,
3
¯
S
,
6
A
and
3
¯
A
. We use the Fermi-Breit interaction Hamiltonian with SU(3) flavor symmetry breaking to determine the masses of the single-charm tetraquarks. We also discuss mass spectra obtained from meson and baryon mass fits. The mass spectra are very similar to those obtained with Glozman-Riska hyperfine interaction, and they indicate that some of the experimentally detected states may have tetraquark nature.