Holographic tetraquarks and the newly observed Tcc+ at LHCb

被引：6
作者：
Liu, Yizhuang [1 ]
Nowak, Maciej A. [1 ,2 ]
Zahed, Ismail [3 ]
机构：
[1] Jagiellonian Univ, Inst Theoret Phys, PL-30348 Krakow, Poland
[2] Jagiellonian Univ, Mark Kac Ctr Complex Syst Res, PL-30348 Krakow, Poland
[3] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA
来源：
PHYSICAL REVIEW D | 2022年 / 105卷 / 05期
关键词：
HEAVY-QUARK; ENERGY-LEVELS; BARYONS; MESONS; MOLECULES; HADRONS; STATES; QCD; STRANGENESS; BREAKING;
D O I：
10.1103/PhysRevD.105.054021
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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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页数：10
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