Strong decays of fully-charm tetraquarks into di-charmonia
[Display omitted] 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 ca...
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Published in | Science bulletin Vol. 65; no. 23; pp. 1994 - 2000 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
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Elsevier B.V
15.12.2020
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ISSN | 2095-9273 2095-9281 |
DOI | 10.1016/j.scib.2020.08.038 |
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Abstract | [Display omitted]
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. |
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AbstractList | 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 J
=0
or 2
, and the narrow structure around 6.9 GeV can be interpreted as a P-wave one with J
=0
or 1
. These structures were observed in the di-J/ψ invariant mass spectrum, and we propose to confirm them in the di-η
,J/ψh
,η
χ
, and η
χ
channels. We also propose to search for their partner states having the negative charge-conjugation parity in the J/ψη
,J/ψχ
,J/ψχ
, and η
h
channels. [Display omitted] 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. |
Author | Chen, Wei Liu, Xiang Chen, Hua-Xing Zhu, Shi-Lin |
Author_xml | – sequence: 1 givenname: Hua-Xing surname: Chen fullname: Chen, Hua-Xing organization: School of Physics, Southeast University, Nanjing 210094, China – sequence: 2 givenname: Wei surname: Chen fullname: Chen, Wei organization: School of Physics, Sun Yat-Sen University, Guangzhou 510275, China – sequence: 3 givenname: Xiang surname: Liu fullname: Liu, Xiang organization: School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China – sequence: 4 givenname: Shi-Lin surname: Zhu fullname: Zhu, Shi-Lin email: zhusl@pku.edu.cn organization: School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China |
BackLink | https://www.ncbi.nlm.nih.gov/pubmed/36659057$$D View this record in MEDLINE/PubMed |
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Keywords | Fierz rearrangement Fully-heavy tetraquark QCD sum rules |
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We study strong decays of the possible fully-charm tetraquarks recently observed by LHCb, and calculate their relative branching ratios... We study strong decays of the possible fully-charm tetraquarks recently observed by LHCb, and calculate their relative branching ratios through the Fierz... |
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Title | Strong decays of fully-charm tetraquarks into di-charmonia |
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