Regular Article - Theoretical Physics
Nonrelativistic treatment of fully-heavy tetraquarks as diquark-antidiquark states
Department of Physics, Faculty of Science and Letters, Ondokuz Mayis University, 55139, Samsun, Turkey
Accepted: 21 April 2021
Published online: 27 April 2021
The goal of the present work is to obtain a reliable estimate of the masses of the ground and radially excited states of fully-heavy tetraquark systems. In order to do this, we use a nonrelativistic model of tetraquarks which are assumed to be compact and consist of diquark-antidiquark pairs. This nonrelativistic model is composed of Hulthen potential, a linear confining potential and spin-spin interaction. We computed ground, first, and second radially excited and tetraquark masses. It was found that predicted masses of ground states of and tetraquarks are significantly higher than the thresholds of the fall-apart decays to the lowest allowed two-meson states. These states should be broad and are thus difficult to observe experimentally. First radially excited states are considerably lower than their corresponding (2S-2S) two-meson thresholds. We hope that our study may be helpful to the experimental search for ground and excited and tetraquark states.
© The Author(s) 2021
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