20 research outputs found
Analytical Solution for the SU(2) Hedgehog Skyrmion and Static Properties of Nucleons
An analytical solution for symmetric Skyrmion was proposed for the SU(2)
Skyrme model, which take the form of the hybrid form of a kink-like solution
and that given by the instanton method. The static properties of nucleons was
then computed within the framework of collective quantization of the Skyrme
model, with a good agreement with that given by the exact numeric solution. The
comparisons with the previous results as well as the experimental values are
also given.Comment: 4 pages, 2 figures, submited to Phys.Lett.
Mass spectra of doubly heavy tetraquarks in diquark-antidiquark picture
Inspired by recent observation of the first doubly charmed tetraquark
, we apply linear Regge relation and mass scaling to study low-lying
mass spectra of the doubly heavy tetraquark in heavy-diquark-light-antidiquark
picture. The measured data and other compatible estimates of ground-state
masses of doubly heavy baryons are employed to evaluate masses of heavy diquark
() and the meson masses are used in mass scaling to
determine the hyperfine mass splitting. Our mass computation indicates that all
low-lying states of doubly heavy tetraquarks are unstable against strong decays
to two heavy-light mesons, except for the ground states of nonstrange
tetraquarks.Comment: Created by Revtex 4, with 10 pages and 0 figures. Accepted by Common.
Theor. Phy