Double strangeness pentaquarks and other exotic hadrons in the $Ξ_b \to Ξ J/Ψ ϕ$ decay
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| author | Marsé-Valera, J. A. Magas, V. K. Ramos, A. |
| author_facet | Marsé-Valera, J. A. Magas, V. K. Ramos, A. |
| contents | We study the possibility that four $Ξ$ resonances $(Ξ(1620)$, $Ξ(1690)$, $Ξ(1820)$, $Ξ(1950))$ could correspond to pentaquark states, in the form of meson-baryon bound systems. We also explore the possible existence of doubly strange pentaquarks with hidden charm $(P_{css})$ and find two candidates structured in a similar form, at energies of $4493~{\rm MeV}$ and $4630~{\rm MeV}$. The meson-baryon interaction is built from t-channel meson exchange processes which are evaluated using effective Lagrangians. Moreover we analyse the $Ξ_b\toΞ~J/ψ~ϕ$ decay process, which permits exploring the existence of the heavy double strange pentaquark, as well as other exotic hadrons, in the three different two-body invariant mass spectra of the emitted particles. In the $J/ψϕ$ mass spectrum, we analyse the nature of the $X(4140)$ and $X(4160)$ resonances. In the $J/ψΞ$ invariant mass spectrum, we study the signal produced by the doubly strange pentaquark, where we conclude that it has a good chance to be detected in this reaction if its mass is around $4580-4680~{\rm MeV}$. Finally, in the $ϕΞ$ spectrum we study the likelihood to detect the $Ξ(2500)$ state. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_10682 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Double strangeness pentaquarks and other exotic hadrons in the $Ξ_b \to Ξ J/Ψ ϕ$ decay Marsé-Valera, J. A. Magas, V. K. Ramos, A. High Energy Physics - Phenomenology We study the possibility that four $Ξ$ resonances $(Ξ(1620)$, $Ξ(1690)$, $Ξ(1820)$, $Ξ(1950))$ could correspond to pentaquark states, in the form of meson-baryon bound systems. We also explore the possible existence of doubly strange pentaquarks with hidden charm $(P_{css})$ and find two candidates structured in a similar form, at energies of $4493~{\rm MeV}$ and $4630~{\rm MeV}$. The meson-baryon interaction is built from t-channel meson exchange processes which are evaluated using effective Lagrangians. Moreover we analyse the $Ξ_b\toΞ~J/ψ~ϕ$ decay process, which permits exploring the existence of the heavy double strange pentaquark, as well as other exotic hadrons, in the three different two-body invariant mass spectra of the emitted particles. In the $J/ψϕ$ mass spectrum, we analyse the nature of the $X(4140)$ and $X(4160)$ resonances. In the $J/ψΞ$ invariant mass spectrum, we study the signal produced by the doubly strange pentaquark, where we conclude that it has a good chance to be detected in this reaction if its mass is around $4580-4680~{\rm MeV}$. Finally, in the $ϕΞ$ spectrum we study the likelihood to detect the $Ξ(2500)$ state. |
| title | Double strangeness pentaquarks and other exotic hadrons in the $Ξ_b \to Ξ J/Ψ ϕ$ decay |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2410.10682 |