Investigation of $$\varXi _c^0$$ Ξ c 0 in a chiral quark model
Abstract Recently, three new states of $$\varXi _c^0$$ Ξ c 0 were observed in the invariant mass spectrum of $$\varLambda ^+_cK^-$$ Λ c + K - by LHCb collaboration. In this work, we use a chiral quark model to investigate these three exited states with the help of Gaussian expansion method both in t...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2021-04-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-021-09175-9 |
| _version_ | 1818613942482632704 |
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| author | Xiaohuang Hu Yue Tan Jialun Ping |
| author_facet | Xiaohuang Hu Yue Tan Jialun Ping |
| author_sort | Xiaohuang Hu |
| collection | DOAJ |
| description | Abstract Recently, three new states of $$\varXi _c^0$$ Ξ c 0 were observed in the invariant mass spectrum of $$\varLambda ^+_cK^-$$ Λ c + K - by LHCb collaboration. In this work, we use a chiral quark model to investigate these three exited states with the help of Gaussian expansion method both in three-quark structure and in five-quark structure with all possible quantum numbers $$IJ^P=\frac{1}{2}(\frac{1}{2})^-$$ I J P = 1 2 ( 1 2 ) - , $$\frac{1}{2}(\frac{3}{2})^-$$ 1 2 ( 3 2 ) - , $$\frac{1}{2}(\frac{5}{2})^-$$ 1 2 ( 5 2 ) - , $$\frac{3}{2}(\frac{1}{2})^-$$ 3 2 ( 1 2 ) - , $$\frac{3}{2}(\frac{3}{2})^-$$ 3 2 ( 3 2 ) - and $$\frac{3}{2}(\frac{5}{2})^-$$ 3 2 ( 5 2 ) - . The calculations shows that the masses of 2S and 1D states of $$\varXi _c$$ Ξ c are comparable to experimental results; In addition, the resonance states of five-quark configuration are possible candidates of these new states with negative parity by using the real scaling method and their decay width is also given. |
| first_indexed | 2024-12-16T16:10:08Z |
| format | Article |
| id | doaj.art-35c66b1e51094884a0c77417fa30ca5a |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-16T16:10:08Z |
| publishDate | 2021-04-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-35c66b1e51094884a0c77417fa30ca5a2022-12-21T22:25:15ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522021-04-0181411010.1140/epjc/s10052-021-09175-9Investigation of $$\varXi _c^0$$ Ξ c 0 in a chiral quark modelXiaohuang Hu0Yue Tan1Jialun Ping2Department of Physics and Jiangsu Key Laboratory for Numerical Simulation of Large Scale Complex Systems, Nanjing Normal UniversityDepartment of Physics and Jiangsu Key Laboratory for Numerical Simulation of Large Scale Complex Systems, Nanjing Normal UniversityDepartment of Physics and Jiangsu Key Laboratory for Numerical Simulation of Large Scale Complex Systems, Nanjing Normal UniversityAbstract Recently, three new states of $$\varXi _c^0$$ Ξ c 0 were observed in the invariant mass spectrum of $$\varLambda ^+_cK^-$$ Λ c + K - by LHCb collaboration. In this work, we use a chiral quark model to investigate these three exited states with the help of Gaussian expansion method both in three-quark structure and in five-quark structure with all possible quantum numbers $$IJ^P=\frac{1}{2}(\frac{1}{2})^-$$ I J P = 1 2 ( 1 2 ) - , $$\frac{1}{2}(\frac{3}{2})^-$$ 1 2 ( 3 2 ) - , $$\frac{1}{2}(\frac{5}{2})^-$$ 1 2 ( 5 2 ) - , $$\frac{3}{2}(\frac{1}{2})^-$$ 3 2 ( 1 2 ) - , $$\frac{3}{2}(\frac{3}{2})^-$$ 3 2 ( 3 2 ) - and $$\frac{3}{2}(\frac{5}{2})^-$$ 3 2 ( 5 2 ) - . The calculations shows that the masses of 2S and 1D states of $$\varXi _c$$ Ξ c are comparable to experimental results; In addition, the resonance states of five-quark configuration are possible candidates of these new states with negative parity by using the real scaling method and their decay width is also given.https://doi.org/10.1140/epjc/s10052-021-09175-9 |
| spellingShingle | Xiaohuang Hu Yue Tan Jialun Ping Investigation of $$\varXi _c^0$$ Ξ c 0 in a chiral quark model European Physical Journal C: Particles and Fields |
| title | Investigation of $$\varXi _c^0$$ Ξ c 0 in a chiral quark model |
| title_full | Investigation of $$\varXi _c^0$$ Ξ c 0 in a chiral quark model |
| title_fullStr | Investigation of $$\varXi _c^0$$ Ξ c 0 in a chiral quark model |
| title_full_unstemmed | Investigation of $$\varXi _c^0$$ Ξ c 0 in a chiral quark model |
| title_short | Investigation of $$\varXi _c^0$$ Ξ c 0 in a chiral quark model |
| title_sort | investigation of varxi c 0 ξ c 0 in a chiral quark model |
| url | https://doi.org/10.1140/epjc/s10052-021-09175-9 |
| work_keys_str_mv | AT xiaohuanghu investigationofvarxic0xc0inachiralquarkmodel AT yuetan investigationofvarxic0xc0inachiralquarkmodel AT jialunping investigationofvarxic0xc0inachiralquarkmodel |