Predicting the D‾s(*)Ds(*) bound states as the partners of X(3872)

Lu Meng; Bo Wang; Shi-Lin Zhu

doi:10.1016/j.scib.2021.03.016

Predicting the D‾_s^()D_s^() bound states as the partners of X(3872)

Sci Bull (Beijing). 2021 Jul 15;66(13):1288-1295. doi: 10.1016/j.scib.2021.03.016. Epub 2021 Mar 19.

Authors

Lu Meng¹, Bo Wang², Shi-Lin Zhu³

Affiliations

¹ Ruhr-Universität Bochum, Fakultät für Physik und Astronomie, Institut für Theoretische Physik II, D-44780 Bochum, Germany.
² Center of High Energy Physics, Peking University, Beijing 100871, China; School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China. Electronic address: bo-wang@pku.edu.cn.
³ Center of High Energy Physics, Peking University, Beijing 100871, China; School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China. Electronic address: zhusl@pku.edu.cn.

PMID: 36654150
DOI: 10.1016/j.scib.2021.03.016

Abstract

In this work, we investigate the SU(3) flavor symmetry, heavy quark spin symmetry and their breaking effects in the di-meson systems. We prove the existence of the [Formula: see text] , [Formula: see text] , and [Formula: see text] bound states as the consequence of two prerequisites in the SU(3) flavor symmetry and heavy quark spin symmetry. The first prerequisite, the X(3872) as the weakly D‾^∗D/D‾D^∗ bound state is supported by its mass and decay branching ratios. The second prerequisite, the existence of the [Formula: see text] bound state is supported by the lattice QCD calculation and the observation of χ_c0(3930) by the LHCb Collaboration. We hope the future experimental analyses can search for these bound states in the B→D_(s)^(*)D‾_(s)^(*)h processes (h denotes the light hadrons). The [Formula: see text] bound state is also expected to be reconstructed in the J/ψϕ final state in the B→J/ψϕK decay.

Keywords: Hadronic molecule; SU(3) flavor symmetry; Tetraquark.