A new decay mode of higher charmonium
Abstract We calculate the $$\Lambda _c{\bar{\Lambda }}_c$$ ΛcΛ¯c partial decay width of the excited vector charmonium states around 4.6 GeV with the quark pair creation model. We find that the partial decay width of the $$\Lambda _c{\bar{\Lambda }}_c$$ ΛcΛ¯c mode can reach up to several MeV for $$\p...
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Springer
2018-07-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-018-6087-3 |
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doaj-art-6ffb4aa19ede461089c998ea7342b8bd2018-08-20T15:49:31ZengSpringerEuropean Physical Journal C: Particles and Fields1434-60441434-60522018-07-017871810.1140/epjc/s10052-018-6087-3A new decay mode of higher charmoniumLi-Ye Xiao0Xin-Zhen Weng1Qi-Fang Lü2Xian-Hui Zhong3Shi-Lin Zhu4School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking UniversitySchool of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking UniversityDepartment of Physics, Hunan Normal University, and Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of EducationDepartment of Physics, Hunan Normal University, and Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of EducationSchool of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking UniversityAbstract We calculate the $$\Lambda _c{\bar{\Lambda }}_c$$ ΛcΛ¯c partial decay width of the excited vector charmonium states around 4.6 GeV with the quark pair creation model. We find that the partial decay width of the $$\Lambda _c{\bar{\Lambda }}_c$$ ΛcΛ¯c mode can reach up to several MeV for $$\psi (4S,~5S,~6S)$$ ψ(4S,5S,6S) . In contrast, the partial $$\Lambda _c{\bar{\Lambda }}_c$$ ΛcΛ¯c decay width of the states $$\psi (3D,~4D,~5D)$$ ψ(3D,4D,5D) is less than one MeV. If the enhancement Y(4630) reported by the Belle Collaboration in $$\Lambda _c{\bar{\Lambda }}_c$$ ΛcΛ¯c invariant-mass distribution is the same structure as Y(4660), the Y(4660) resonance is most likely to be a S-wave charmonium state.http://link.springer.com/article/10.1140/epjc/s10052-018-6087-3 |
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| language |
English |
| format |
Article |
| author |
Li-Ye Xiao Xin-Zhen Weng Qi-Fang Lü Xian-Hui Zhong Shi-Lin Zhu |
| spellingShingle |
Li-Ye Xiao Xin-Zhen Weng Qi-Fang Lü Xian-Hui Zhong Shi-Lin Zhu A new decay mode of higher charmonium European Physical Journal C: Particles and Fields |
| author_facet |
Li-Ye Xiao Xin-Zhen Weng Qi-Fang Lü Xian-Hui Zhong Shi-Lin Zhu |
| author_sort |
Li-Ye Xiao |
| title |
A new decay mode of higher charmonium |
| title_short |
A new decay mode of higher charmonium |
| title_full |
A new decay mode of higher charmonium |
| title_fullStr |
A new decay mode of higher charmonium |
| title_full_unstemmed |
A new decay mode of higher charmonium |
| title_sort |
new decay mode of higher charmonium |
| publisher |
Springer |
| series |
European Physical Journal C: Particles and Fields |
| issn |
1434-6044 1434-6052 |
| publishDate |
2018-07-01 |
| description |
Abstract We calculate the $$\Lambda _c{\bar{\Lambda }}_c$$ ΛcΛ¯c partial decay width of the excited vector charmonium states around 4.6 GeV with the quark pair creation model. We find that the partial decay width of the $$\Lambda _c{\bar{\Lambda }}_c$$ ΛcΛ¯c mode can reach up to several MeV for $$\psi (4S,~5S,~6S)$$ ψ(4S,5S,6S) . In contrast, the partial $$\Lambda _c{\bar{\Lambda }}_c$$ ΛcΛ¯c decay width of the states $$\psi (3D,~4D,~5D)$$ ψ(3D,4D,5D) is less than one MeV. If the enhancement Y(4630) reported by the Belle Collaboration in $$\Lambda _c{\bar{\Lambda }}_c$$ ΛcΛ¯c invariant-mass distribution is the same structure as Y(4660), the Y(4660) resonance is most likely to be a S-wave charmonium state. |
| url |
http://link.springer.com/article/10.1140/epjc/s10052-018-6087-3 |
| _version_ |
1612687282463047680 |