期刊
PHYSICAL REVIEW D
卷 105, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.105.054021
关键词
-
资金
- U.S. Department of Energy [DE-FG-88ER40388]
- Polish National Centre of Science Grant [UMO-2017/27/B/ST2/01139]
The paper describes a heavy and exotic tetraquark state as a holographic molecule by binding the lightest heavylight meson multiplet to a flavored sphaleron in the Witten-Sakai-Sugimoto model. Bound tetraquark states appear as Efimov states in the heavy quark limit, with a binding energy similar to the recently reported T thorn cc by the LHCb collaboration. It also predicts the bindings of undiscovered bottom-charm and bottom tetraquarks based on the parameters fixed at the empirical mass of T thorn cc.
We describe a heavy and exotic tetraquark state as a holographic molecule, by binding the lightest heavylight meson (0-, 1-) multiplet to a flavored sphaleron, in the bulk of the Witten-Sakai-Sugimoto model. Bound tetraquark states emerge as Efimov states in the heavy quark limit, with a binding energy for a charm tetraquark comparable to the T thorn cc recently reported by the LHCb collaboration, but with a substantially smaller width, for a large but finite 't Hooft coupling. Fixing the parameters of the model at the empirical mass of T thorn cc, allows for a prediction of the bindings of the undiscovered bottom-charm and bottom tetraquarks.
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