Strong decay of $$\Lambda _c(2940)$$ Λc(2940) as a 2P state in the $$\Lambda _c$$ Λc family
Abstract Considering the mass, parity and $$D^0 p$$ D0p decay mode, we tentatively assign the $$\Lambda _c(2940)$$ Λc(2940) as the $$P-$$ P- wave states with one radial excitation. Then, via studying the strong decay behavior of the $$\Lambda _c(2940)$$ Λc(2940) within the $$^3P_0$$ 3P0 model, we ob...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2018-07-01
|
| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-018-6083-7 |
| _version_ | 1818874391504617472 |
|---|---|
| author | Qi-Fang Lü Li-Ye Xiao Zuo-Yun Wang Xian-Hui Zhong |
| author_facet | Qi-Fang Lü Li-Ye Xiao Zuo-Yun Wang Xian-Hui Zhong |
| author_sort | Qi-Fang Lü |
| collection | DOAJ |
| description | Abstract Considering the mass, parity and $$D^0 p$$ D0p decay mode, we tentatively assign the $$\Lambda _c(2940)$$ Λc(2940) as the $$P-$$ P- wave states with one radial excitation. Then, via studying the strong decay behavior of the $$\Lambda _c(2940)$$ Λc(2940) within the $$^3P_0$$ 3P0 model, we obtain that the total decay widths of the $$\Lambda _{c1}(\frac{1}{2}^-,2P)$$ Λc1(12-,2P) and $$\Lambda _{c1}(\frac{3}{2}^-,2P)$$ Λc1(32-,2P) states are 16.27 and 25.39 MeV, respectively. Compared with the experimental total width $$27.7^{+8.2}_{-6.0}\pm 0.9^{+5.2}_{-10.4}~\mathrm {MeV}$$ 27.7-6.0+8.2±0.9-10.4+5.2MeV measured by LHCb Collaboration, both assignments are allowed, and the $$J^P=\frac{3}{2}^-$$ JP=32- assignment is more favorable. Other $$\lambda $$ λ -mode $$\Sigma _c(2P)$$ Σc(2P) states are also investigated, which are most likely to be narrow states and have good potential to be observed in future experiments. |
| first_indexed | 2024-12-19T13:09:51Z |
| format | Article |
| id | doaj.art-18e00ee49ac947f2a66c2f3f4370cc39 |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-19T13:09:51Z |
| publishDate | 2018-07-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-18e00ee49ac947f2a66c2f3f4370cc392022-12-21T20:19:57ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522018-07-017871810.1140/epjc/s10052-018-6083-7Strong decay of $$\Lambda _c(2940)$$ Λc(2940) as a 2P state in the $$\Lambda _c$$ Λc familyQi-Fang Lü0Li-Ye Xiao1Zuo-Yun Wang2Xian-Hui Zhong3Department 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 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 EducationAbstract Considering the mass, parity and $$D^0 p$$ D0p decay mode, we tentatively assign the $$\Lambda _c(2940)$$ Λc(2940) as the $$P-$$ P- wave states with one radial excitation. Then, via studying the strong decay behavior of the $$\Lambda _c(2940)$$ Λc(2940) within the $$^3P_0$$ 3P0 model, we obtain that the total decay widths of the $$\Lambda _{c1}(\frac{1}{2}^-,2P)$$ Λc1(12-,2P) and $$\Lambda _{c1}(\frac{3}{2}^-,2P)$$ Λc1(32-,2P) states are 16.27 and 25.39 MeV, respectively. Compared with the experimental total width $$27.7^{+8.2}_{-6.0}\pm 0.9^{+5.2}_{-10.4}~\mathrm {MeV}$$ 27.7-6.0+8.2±0.9-10.4+5.2MeV measured by LHCb Collaboration, both assignments are allowed, and the $$J^P=\frac{3}{2}^-$$ JP=32- assignment is more favorable. Other $$\lambda $$ λ -mode $$\Sigma _c(2P)$$ Σc(2P) states are also investigated, which are most likely to be narrow states and have good potential to be observed in future experiments.http://link.springer.com/article/10.1140/epjc/s10052-018-6083-7 |
| spellingShingle | Qi-Fang Lü Li-Ye Xiao Zuo-Yun Wang Xian-Hui Zhong Strong decay of $$\Lambda _c(2940)$$ Λc(2940) as a 2P state in the $$\Lambda _c$$ Λc family European Physical Journal C: Particles and Fields |
| title | Strong decay of $$\Lambda _c(2940)$$ Λc(2940) as a 2P state in the $$\Lambda _c$$ Λc family |
| title_full | Strong decay of $$\Lambda _c(2940)$$ Λc(2940) as a 2P state in the $$\Lambda _c$$ Λc family |
| title_fullStr | Strong decay of $$\Lambda _c(2940)$$ Λc(2940) as a 2P state in the $$\Lambda _c$$ Λc family |
| title_full_unstemmed | Strong decay of $$\Lambda _c(2940)$$ Λc(2940) as a 2P state in the $$\Lambda _c$$ Λc family |
| title_short | Strong decay of $$\Lambda _c(2940)$$ Λc(2940) as a 2P state in the $$\Lambda _c$$ Λc family |
| title_sort | strong decay of lambda c 2940 λc 2940 as a 2p state in the lambda c λc family |
| url | http://link.springer.com/article/10.1140/epjc/s10052-018-6083-7 |
| work_keys_str_mv | AT qifanglu strongdecayoflambdac2940lc2940asa2pstateinthelambdaclcfamily AT liyexiao strongdecayoflambdac2940lc2940asa2pstateinthelambdaclcfamily AT zuoyunwang strongdecayoflambdac2940lc2940asa2pstateinthelambdaclcfamily AT xianhuizhong strongdecayoflambdac2940lc2940asa2pstateinthelambdaclcfamily |