The strong coupling constants of doubly heavy baryons with heavy mesons
Abstract In experiments, only one doubly charmed baryon $$\Xi _{cc}^{++}$$ Ξ cc + + has been successfully identified to date. The LHCb collaboration is poised to discover other doubly heavy baryons, $$\Xi _{cc}^{+}$$ Ξ cc + and $$\Xi _{bc}^{+}$$ Ξ bc + , necessitating a comprehensive study of doubly...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-06-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-025-14229-3 |
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| author | Xiao-Hui Hu Quan-Yu Zhou Ye Xing Yu-Ji Shi |
| author_facet | Xiao-Hui Hu Quan-Yu Zhou Ye Xing Yu-Ji Shi |
| author_sort | Xiao-Hui Hu |
| collection | DOAJ |
| description | Abstract In experiments, only one doubly charmed baryon $$\Xi _{cc}^{++}$$ Ξ cc + + has been successfully identified to date. The LHCb collaboration is poised to discover other doubly heavy baryons, $$\Xi _{cc}^{+}$$ Ξ cc + and $$\Xi _{bc}^{+}$$ Ξ bc + , necessitating a comprehensive study of doubly heavy baryons from various perspectives. Such investigations will elucidate the properties of the newly discovered states and facilitate the search for other doubly heavy baryons as predicted in the quark model. In this paper, we explore the strong coupling between the doubly heavy baryon, singly heavy baryon, and heavy meson, $$\mathcal{B}_{QQ^{\prime }}\mathcal{B}_{Q}M_{Q^{\prime }}$$ B Q Q ′ B Q M Q ′ , using the light-cone QCD sum rules approach. We analytically and numerically calculate the strong coupling, $$\mathcal{B}_{QQ^{\prime }}\mathcal{B}_{Q}M_{Q^{\prime }}$$ B Q Q ′ B Q M Q ′ , utilizing the light-cone distribution amplitudes of the singly heavy baryon $$\mathcal{B}_{Q}$$ B Q . Numerical predictions for these strong couplings are provided, along with an error analysis. Our theoretical findings can be employed to examine the strong and weak decay dynamics of doubly heavy baryons. Furthermore, our results may offer experimentalists a valuable tool for analyzing data on the strong coupling constants among hadronic multiplets. |
| format | Article |
| id | doaj-art-72f81deea4a84981a0150da8f2a2eb5e |
| institution | DOAJ |
| issn | 1434-6052 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj-art-72f81deea4a84981a0150da8f2a2eb5e2025-08-20T03:10:32ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522025-06-0185611410.1140/epjc/s10052-025-14229-3The strong coupling constants of doubly heavy baryons with heavy mesonsXiao-Hui Hu0Quan-Yu Zhou1Ye Xing2Yu-Ji Shi3Department of Applied Physics, the School of Materials Science and Physics, China University of Mining and TechnologyDepartment of Applied Physics, the School of Materials Science and Physics, China University of Mining and TechnologyDepartment of Applied Physics, the School of Materials Science and Physics, China University of Mining and TechnologySchool of Physics, East China University of Science and TechnologyAbstract In experiments, only one doubly charmed baryon $$\Xi _{cc}^{++}$$ Ξ cc + + has been successfully identified to date. The LHCb collaboration is poised to discover other doubly heavy baryons, $$\Xi _{cc}^{+}$$ Ξ cc + and $$\Xi _{bc}^{+}$$ Ξ bc + , necessitating a comprehensive study of doubly heavy baryons from various perspectives. Such investigations will elucidate the properties of the newly discovered states and facilitate the search for other doubly heavy baryons as predicted in the quark model. In this paper, we explore the strong coupling between the doubly heavy baryon, singly heavy baryon, and heavy meson, $$\mathcal{B}_{QQ^{\prime }}\mathcal{B}_{Q}M_{Q^{\prime }}$$ B Q Q ′ B Q M Q ′ , using the light-cone QCD sum rules approach. We analytically and numerically calculate the strong coupling, $$\mathcal{B}_{QQ^{\prime }}\mathcal{B}_{Q}M_{Q^{\prime }}$$ B Q Q ′ B Q M Q ′ , utilizing the light-cone distribution amplitudes of the singly heavy baryon $$\mathcal{B}_{Q}$$ B Q . Numerical predictions for these strong couplings are provided, along with an error analysis. Our theoretical findings can be employed to examine the strong and weak decay dynamics of doubly heavy baryons. Furthermore, our results may offer experimentalists a valuable tool for analyzing data on the strong coupling constants among hadronic multiplets.https://doi.org/10.1140/epjc/s10052-025-14229-3 |
| spellingShingle | Xiao-Hui Hu Quan-Yu Zhou Ye Xing Yu-Ji Shi The strong coupling constants of doubly heavy baryons with heavy mesons European Physical Journal C: Particles and Fields |
| title | The strong coupling constants of doubly heavy baryons with heavy mesons |
| title_full | The strong coupling constants of doubly heavy baryons with heavy mesons |
| title_fullStr | The strong coupling constants of doubly heavy baryons with heavy mesons |
| title_full_unstemmed | The strong coupling constants of doubly heavy baryons with heavy mesons |
| title_short | The strong coupling constants of doubly heavy baryons with heavy mesons |
| title_sort | strong coupling constants of doubly heavy baryons with heavy mesons |
| url | https://doi.org/10.1140/epjc/s10052-025-14229-3 |
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