Two-body hidden charm decays of D wave charmonia
Abstract The experimental observations of $$\psi _2(3823)$$ ψ 2 ( 3823 ) and $$\psi _3(3842)$$ ψ 3 ( 3842 ) make D wave charmonia family abundant. In the present work, we investigate the hidden charm decay processes of spin triplets of the D-wave charmonia with the meson loop mechanism. The model pa...
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| Language: | English |
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SpringerOpen
2025-01-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-025-13808-8 |
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| author | Xiao-Yu Qi Qi Wu Xing-Dao Guo Dian-Yong Chen |
| author_facet | Xiao-Yu Qi Qi Wu Xing-Dao Guo Dian-Yong Chen |
| author_sort | Xiao-Yu Qi |
| collection | DOAJ |
| description | Abstract The experimental observations of $$\psi _2(3823)$$ ψ 2 ( 3823 ) and $$\psi _3(3842)$$ ψ 3 ( 3842 ) make D wave charmonia family abundant. In the present work, we investigate the hidden charm decay processes of spin triplets of the D-wave charmonia with the meson loop mechanism. The model parameter $$\alpha _\Lambda $$ α Λ is determined by reproducing the branching fraction of $$\psi (3770)\rightarrow J/\psi \eta $$ ψ ( 3770 ) → J / ψ η . With this range of model parameter values, the branching fractions (partial widths) of $$\psi (3770) \rightarrow \eta _c \omega $$ ψ ( 3770 ) → η c ω , $$\psi _2(3823)/\psi _3(3842) \rightarrow J/\psi \eta $$ ψ 2 ( 3823 ) / ψ 3 ( 3842 ) → J / ψ η , $$\psi _2(3823)/\psi _3(3842) \rightarrow \eta _c \omega $$ ψ 2 ( 3823 ) / ψ 3 ( 3842 ) → η c ω are estimated. Our estimations find that the partial width of $$\psi _2(3823) \rightarrow J/\psi \eta $$ ψ 2 ( 3823 ) → J / ψ η is $$\left( 29.64^{+4.01}_{-4.63}\right) \ \textrm{keV}$$ 29 . 64 - 4.63 + 4.01 keV , and the partial width ratio of $$\psi _2(3823) \rightarrow J/\psi \eta $$ ψ 2 ( 3823 ) → J / ψ η relative to $$\psi _2(3823)\rightarrow \gamma \chi _{c1}$$ ψ 2 ( 3823 ) → γ χ c 1 is about $$10\%$$ 10 % , which could be tested by further precise measurements from the BESIII, Belle II and LHCb Collaborations. |
| format | Article |
| id | doaj-art-13101cae8d5842268bf6a5469d57489b |
| institution | Kabale University |
| issn | 1434-6052 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj-art-13101cae8d5842268bf6a5469d57489b2025-02-02T12:38:13ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522025-01-0185111110.1140/epjc/s10052-025-13808-8Two-body hidden charm decays of D wave charmoniaXiao-Yu Qi0Qi Wu1Xing-Dao Guo2Dian-Yong Chen3School of Physics, Southeast UniversityInstitute of Particle and Nuclear Physics, Henan Normal UniversityCollege of Physics and New Energy, Xuzhou University of TechnologySchool of Physics, Southeast UniversityAbstract The experimental observations of $$\psi _2(3823)$$ ψ 2 ( 3823 ) and $$\psi _3(3842)$$ ψ 3 ( 3842 ) make D wave charmonia family abundant. In the present work, we investigate the hidden charm decay processes of spin triplets of the D-wave charmonia with the meson loop mechanism. The model parameter $$\alpha _\Lambda $$ α Λ is determined by reproducing the branching fraction of $$\psi (3770)\rightarrow J/\psi \eta $$ ψ ( 3770 ) → J / ψ η . With this range of model parameter values, the branching fractions (partial widths) of $$\psi (3770) \rightarrow \eta _c \omega $$ ψ ( 3770 ) → η c ω , $$\psi _2(3823)/\psi _3(3842) \rightarrow J/\psi \eta $$ ψ 2 ( 3823 ) / ψ 3 ( 3842 ) → J / ψ η , $$\psi _2(3823)/\psi _3(3842) \rightarrow \eta _c \omega $$ ψ 2 ( 3823 ) / ψ 3 ( 3842 ) → η c ω are estimated. Our estimations find that the partial width of $$\psi _2(3823) \rightarrow J/\psi \eta $$ ψ 2 ( 3823 ) → J / ψ η is $$\left( 29.64^{+4.01}_{-4.63}\right) \ \textrm{keV}$$ 29 . 64 - 4.63 + 4.01 keV , and the partial width ratio of $$\psi _2(3823) \rightarrow J/\psi \eta $$ ψ 2 ( 3823 ) → J / ψ η relative to $$\psi _2(3823)\rightarrow \gamma \chi _{c1}$$ ψ 2 ( 3823 ) → γ χ c 1 is about $$10\%$$ 10 % , which could be tested by further precise measurements from the BESIII, Belle II and LHCb Collaborations.https://doi.org/10.1140/epjc/s10052-025-13808-8 |
| spellingShingle | Xiao-Yu Qi Qi Wu Xing-Dao Guo Dian-Yong Chen Two-body hidden charm decays of D wave charmonia European Physical Journal C: Particles and Fields |
| title | Two-body hidden charm decays of D wave charmonia |
| title_full | Two-body hidden charm decays of D wave charmonia |
| title_fullStr | Two-body hidden charm decays of D wave charmonia |
| title_full_unstemmed | Two-body hidden charm decays of D wave charmonia |
| title_short | Two-body hidden charm decays of D wave charmonia |
| title_sort | two body hidden charm decays of d wave charmonia |
| url | https://doi.org/10.1140/epjc/s10052-025-13808-8 |
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