globalchange  > 气候变化与战略
DOI: 10.1016/j.scib.2020.08.038
论文题名:
Strong decays of fully-charm tetraquarks into di-charmonia
作者: Chen H.-X.; Chen W.; Liu X.; Zhu S.-L.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2020
卷: 65, 期:23
起始页码: 1994
结束页码: 2000
语种: 英语
中文关键词: Fierz rearrangement ; Fully-heavy tetraquark ; QCD sum rules
英文关键词: Germanium compounds ; Hadrons ; Mass spectrometry ; Seismic waves ; Shear waves ; Branching ratio ; Invariant-mass spectra ; Negative charge ; P waves ; QCD sum rules ; S-waves ; Tetraquarks ; Bosons
英文摘要: We study strong decays of the possible fully-charm tetraquarks recently observed by LHCb, and calculate their relative branching ratios through the Fierz rearrangement. Together with our previous QCD sum rule study, our results suggest that the broad structure around 6.2–6.8 GeV can be interpreted as an S-wave ccc¯c¯ tetraquark state with JPC=0++ or 2++, and the narrow structure around 6.9 GeV can be interpreted as a P-wave one with JPC=0-+ or 1-+. These structures were observed in the di-J/ψ invariant mass spectrum, and we propose to confirm them in the di-ηc,J/ψhc,ηcχc0, and ηcχc1 channels. We also propose to search for their partner states having the negative charge-conjugation parity in the J/ψηc,J/ψχc0,J/ψχc1, and ηchc channels. © 2020 Science China Press
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169859
Appears in Collections:气候变化与战略

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作者单位: School of Physics, Southeast University, Nanjing, 210094, China; School of Physics, Beihang University, Beijing, 100191, China; School of Physics, Sun Yat-Sen University, Guangzhou, 510275, China; School of Physical Science and Technology, Lanzhou University, Lanzhou, 730000, China; Research Center for Hadron and CSR Physics, Lanzhou University and Institute of Modern Physics of CAS, Lanzhou, 730000, China; School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, 100871, China; Collaborative Innovation Center of Quantum Matter, Beijing, 100871, China; Center of High Energy Physics, Peking University, Beijing, 100871, China

Recommended Citation:
Chen H.-X.,Chen W.,Liu X.,et al. Strong decays of fully-charm tetraquarks into di-charmonia[J]. Science Bulletin,2020-01-01,65(23)
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