X(3860) production in association with $$J/\psi $$ J / ψ via $$e^{+}e^{-}$$ e + e - annihilation at Belle
Abstract In this paper, we study the X(3860) production associated with $$J/\psi $$ J / ψ via $$e^{+}e^{-}$$ e + e - annihilation at the next-to-leading-order (NLO) accuracy in $$\alpha _s$$ α s , within the nonrelativistic QCD (NRQCD) framework. With the hypothesis of $$J^{PC}_{X(3860)}=0^{++}$$ J...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2023-05-01
|
| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-023-11538-3 |
| _version_ | 1797789662479122432 |
|---|---|
| author | Gui-Yuan Zhang Cong Li Ying-Zhao Jiang Zhan Sun |
| author_facet | Gui-Yuan Zhang Cong Li Ying-Zhao Jiang Zhan Sun |
| author_sort | Gui-Yuan Zhang |
| collection | DOAJ |
| description | Abstract In this paper, we study the X(3860) production associated with $$J/\psi $$ J / ψ via $$e^{+}e^{-}$$ e + e - annihilation at the next-to-leading-order (NLO) accuracy in $$\alpha _s$$ α s , within the nonrelativistic QCD (NRQCD) framework. With the hypothesis of $$J^{PC}_{X(3860)}=0^{++}$$ J X ( 3860 ) PC = 0 + + , the predictions of $$\sigma _{e^{+}e^{-} \rightarrow J/\psi +X(3860)}$$ σ e + e - → J / ψ + X ( 3860 ) agree well with the Belle measurements, whereas the results following the $$2^{++}$$ 2 + + assignment significantly undershoot the data. This is consistent with the Belle’s conclusion that the $$0^{++}$$ 0 + + hypothesis is favored over the $$2^{++}$$ 2 + + hypothesis for X(3860). Despite fitting the data of the total cross section, the NRQCD predictions seem to be incompatible with the measured $$J/\psi $$ J / ψ angular distributions. We simultaneously calculate the cross section of $$e^{+}e^{-} \rightarrow J/\psi +X(3940)$$ e + e - → J / ψ + X ( 3940 ) under the assumption of $$J^{PC}_{X(3940)}=0^{-+}$$ J X ( 3940 ) PC = 0 - + , discovering the consistency of the NRQCD predictions with the light-cone results as well as the experiment. |
| first_indexed | 2024-03-13T01:52:52Z |
| format | Article |
| id | doaj.art-ccd40e1eb202485286d3340225b49e24 |
| institution | Directory Open Access Journal |
| issn | 1434-6052 |
| language | English |
| last_indexed | 2024-03-13T01:52:52Z |
| publishDate | 2023-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-ccd40e1eb202485286d3340225b49e242023-07-02T11:24:52ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522023-05-0183511010.1140/epjc/s10052-023-11538-3X(3860) production in association with $$J/\psi $$ J / ψ via $$e^{+}e^{-}$$ e + e - annihilation at BelleGui-Yuan Zhang0Cong Li1Ying-Zhao Jiang2Zhan Sun3Department of Physics, Guizhou Minzu UniversityDepartment of Physics, Guizhou Minzu UniversityDepartment of Physics, Guizhou Minzu UniversityDepartment of Physics, Guizhou Minzu UniversityAbstract In this paper, we study the X(3860) production associated with $$J/\psi $$ J / ψ via $$e^{+}e^{-}$$ e + e - annihilation at the next-to-leading-order (NLO) accuracy in $$\alpha _s$$ α s , within the nonrelativistic QCD (NRQCD) framework. With the hypothesis of $$J^{PC}_{X(3860)}=0^{++}$$ J X ( 3860 ) PC = 0 + + , the predictions of $$\sigma _{e^{+}e^{-} \rightarrow J/\psi +X(3860)}$$ σ e + e - → J / ψ + X ( 3860 ) agree well with the Belle measurements, whereas the results following the $$2^{++}$$ 2 + + assignment significantly undershoot the data. This is consistent with the Belle’s conclusion that the $$0^{++}$$ 0 + + hypothesis is favored over the $$2^{++}$$ 2 + + hypothesis for X(3860). Despite fitting the data of the total cross section, the NRQCD predictions seem to be incompatible with the measured $$J/\psi $$ J / ψ angular distributions. We simultaneously calculate the cross section of $$e^{+}e^{-} \rightarrow J/\psi +X(3940)$$ e + e - → J / ψ + X ( 3940 ) under the assumption of $$J^{PC}_{X(3940)}=0^{-+}$$ J X ( 3940 ) PC = 0 - + , discovering the consistency of the NRQCD predictions with the light-cone results as well as the experiment.https://doi.org/10.1140/epjc/s10052-023-11538-3 |
| spellingShingle | Gui-Yuan Zhang Cong Li Ying-Zhao Jiang Zhan Sun X(3860) production in association with $$J/\psi $$ J / ψ via $$e^{+}e^{-}$$ e + e - annihilation at Belle European Physical Journal C: Particles and Fields |
| title | X(3860) production in association with $$J/\psi $$ J / ψ via $$e^{+}e^{-}$$ e + e - annihilation at Belle |
| title_full | X(3860) production in association with $$J/\psi $$ J / ψ via $$e^{+}e^{-}$$ e + e - annihilation at Belle |
| title_fullStr | X(3860) production in association with $$J/\psi $$ J / ψ via $$e^{+}e^{-}$$ e + e - annihilation at Belle |
| title_full_unstemmed | X(3860) production in association with $$J/\psi $$ J / ψ via $$e^{+}e^{-}$$ e + e - annihilation at Belle |
| title_short | X(3860) production in association with $$J/\psi $$ J / ψ via $$e^{+}e^{-}$$ e + e - annihilation at Belle |
| title_sort | x 3860 production in association with j psi j ψ via e e e e annihilation at belle |
| url | https://doi.org/10.1140/epjc/s10052-023-11538-3 |
| work_keys_str_mv | AT guiyuanzhang x3860productioninassociationwithjpsijpsviaeeeeannihilationatbelle AT congli x3860productioninassociationwithjpsijpsviaeeeeannihilationatbelle AT yingzhaojiang x3860productioninassociationwithjpsijpsviaeeeeannihilationatbelle AT zhansun x3860productioninassociationwithjpsijpsviaeeeeannihilationatbelle |