Spectroscopic behavior of fully heavy tetraquarks
School of Physical Science and Technology, Lanzhou University, 730000, Lanzhou, China
2 Research Center for Hadron and CSR Physics, Lanzhou University and Institute of Modern Physics of CAS, 730000, Lanzhou, China
3 Key Laboratory of Quantum Theory and Applications of MoE, Lanzhou University, 730000, Lanzhou, China
4 MoE Frontiers Science Center for Rare Isotopes, Lanzhou University, 730000, Lanzhou, China
5 Lanzhou Center for Theoretical Physics, Lanzhou University, 730000, Lanzhou, Gansu, China
Accepted: 17 July 2023
Published online: 22 August 2023
Stimulated by the observation of the X(6900) from LHCb in 2020 and the recent results from CMS and ATLAS in the di- invariant mass spectrum, in this work we systematically study all possible configurations for the ground states of fully heavy tetraquark in the constituent quark model. By our calculation, we present their spectroscopic behaviors including binding energy, lowest meson–meson thresholds, specific wave function, magnetic moment, transition magnetic moment, radiative decay width, rearrangement strong width ratio, internal mass contributions, relative lengths between (anti)quarks, and the spatial distribution of four valence (anti)quarks. We cannot find a stable S-wave state for the fully heavy tetraquark system. We hope that our results will be valuable to further experimental exploration of fully heavy tetraquark states.
© The Author(s) 2023
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Funded by SCOAP3. SCOAP3 supports the goals of the International Year of Basic Sciences for Sustainable Development.