| Article | |
| Report number | arXiv:2006.11952 |
| Title | Fully heavy tetraquark states and their evidences in LHC observations |
| Related title | Full-heavy tetraquark states and their evidences in the LHCb di-$J/\psi$ spectrum |
| Author(s) | liu, Ming-Sheng (Hunan Normal U. ; Hunan, LDQSQC ; SICQEA, Changsha) ; Liu, Feng-Xiao (Hunan Normal U. ; Hunan, LDQSQC ; SICQEA, Changsha) ; Zhong, Xian-Hui (Hunan Normal U. ; Hunan, LDQSQC ; SICQEA, Changsha) ; Zhao, Qiang (Beijing, Inst. High Energy Phys. ; North China Electric Power U., Beijing ; Beijing, GUCAS ; SICQEA, Changsha) |
| Publication | 2024-04-01 |
| Imprint | 2020-06-21 |
| Number of pages | 14 |
| In: | Phys. Rev. D 109 (2024) 076017 |
| DOI | 10.1103/PhysRevD.109.076017 (publication) |
| Subject category | hep-ex ; Particle Physics - Experiment ; hep-ph ; Particle Physics - Phenomenology |
| Accelerator/Facility, Experiment | CERN LHC ; LHCb |
| Abstract | Stimulated by the exciting progress on the observations of the fully-charmed tetraquarks at LHC, we carry out a combined analysis of the mass spectra and fall-apart decays of the $1S$-, $2S$-, and $1P$-wave $cc\bar{c}\bar{c}$ states in a nonrelativistic quark model (NRQM). It is found that the $X(6600)$ structure observed in the di-$J/\psi$ invariant mass spectrum can be explained by the $1S$-wave state $T_{(4c)0^{++}}(6550)$. This structure may also bear some feed-down effects from the higher $2S$ and/or $1P$ tetraquark states. The $X(6900)$ structure observed in both the di-$J/\psi$ and $J/\psi \psi(2S)$ channels can be naturally explained by the $2S$-wave state $T_{(4c)0^{++}}(6957)$. The small shoulder structure around $6.2-6.4$ GeV observed at CMS and ATLAS may be due to the feed-down effects from some $1P$-wave states with $C=-1$ and/or some $2S$-wave states with $J^{PC}=0^{++}$. Other decay channels are implied in such a scenario and they can be investigated by future experimental analyses. Considering the large discovery potential at LHC, we also present predictions for the $bb\bar{b}\bar{b}$ states which can be searched for in the future. |
| Copyright/License | publication: © 2024 authors (License: CC BY 4.0), sponsored by SCOAP³ preprint: (License: CC-BY-4.0) |
Corresponding record in: Inspire
Element opprettet 2021-03-27, sist endret 2024-04-20
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