Doubly charmed pentaquark states in QCD sum rules
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866910441215623168 |
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| author | Duan, Feng-Bo Wang, Qi-Nan Yang, Zi-Yan Chen, Xu-Liang Chen, Wei |
| author_facet | Duan, Feng-Bo Wang, Qi-Nan Yang, Zi-Yan Chen, Xu-Liang Chen, Wei |
| contents | We have studied the mass spectra of doubly charmed pentaquark states in the $Λ_{c}^{(*)}D^{(*)}$ and $Σ_{c}^{(*)}D^{(*)}$ channels with $J^P=1/2^\pm$, $3/2^\pm$ and $5/2^\pm$ within the framework of QCD sum rules. We use the parity projected sum rules to separate the contributions of negative and positive parities from the two-point correlations induced by the pentaquark interpolating currents. Our results show that the bound states of $P_{cc}$ pentaquarks may exist in the $Λ_cD\, (\frac{1}{2}^-)$, $Σ_cD\, (\frac{1}{2}^-)$, $Σ_cD^*\, (\frac{3}{2}^-)$, $Λ_c^*D\, (\frac{3}{2}^-)$, $Λ_c^*D^*\, (\frac{5}{2}^-)$ channels with negative-parity and $Σ_cD\, (\frac{1}{2}^+)$, $Σ_cD^\ast\, (\frac{3}{2}^+)$, $Σ_c^\ast D\, (\frac{3}{2}^+)$ channels with positive-parity, since their masses are predicted to be lower than the corresponding meson-baryon thresholds. However, they are still allowed to decay into the $Ξ_{cc}^{(\ast)}π$ final states via strong interaction. The triply charged $P_{cc}^{+++}(ccuu\bar d)$ and neutral $P_{cc}^{0}(ccdd\bar u)$ in the isospin quartet would definitely be pentaquark states due to their exotic charges. We suggest searching for these characteristic doubly charmed pentaquark signals in the $P_{cc}^{+++}\toΞ_{cc}^{(\ast) ++}π^+/ρ^+$, $Σ_c^{(\ast)++}D^{(\ast)+}$ and $P_{cc}^{0}\toΞ_{cc}^{(\ast) +}π^-/ρ^-$, $Σ_c^{(\ast)0}D^{(\ast)0}$ decays in the near future. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_10078 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Doubly charmed pentaquark states in QCD sum rules Duan, Feng-Bo Wang, Qi-Nan Yang, Zi-Yan Chen, Xu-Liang Chen, Wei High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Lattice We have studied the mass spectra of doubly charmed pentaquark states in the $Λ_{c}^{(*)}D^{(*)}$ and $Σ_{c}^{(*)}D^{(*)}$ channels with $J^P=1/2^\pm$, $3/2^\pm$ and $5/2^\pm$ within the framework of QCD sum rules. We use the parity projected sum rules to separate the contributions of negative and positive parities from the two-point correlations induced by the pentaquark interpolating currents. Our results show that the bound states of $P_{cc}$ pentaquarks may exist in the $Λ_cD\, (\frac{1}{2}^-)$, $Σ_cD\, (\frac{1}{2}^-)$, $Σ_cD^*\, (\frac{3}{2}^-)$, $Λ_c^*D\, (\frac{3}{2}^-)$, $Λ_c^*D^*\, (\frac{5}{2}^-)$ channels with negative-parity and $Σ_cD\, (\frac{1}{2}^+)$, $Σ_cD^\ast\, (\frac{3}{2}^+)$, $Σ_c^\ast D\, (\frac{3}{2}^+)$ channels with positive-parity, since their masses are predicted to be lower than the corresponding meson-baryon thresholds. However, they are still allowed to decay into the $Ξ_{cc}^{(\ast)}π$ final states via strong interaction. The triply charged $P_{cc}^{+++}(ccuu\bar d)$ and neutral $P_{cc}^{0}(ccdd\bar u)$ in the isospin quartet would definitely be pentaquark states due to their exotic charges. We suggest searching for these characteristic doubly charmed pentaquark signals in the $P_{cc}^{+++}\toΞ_{cc}^{(\ast) ++}π^+/ρ^+$, $Σ_c^{(\ast)++}D^{(\ast)+}$ and $P_{cc}^{0}\toΞ_{cc}^{(\ast) +}π^-/ρ^-$, $Σ_c^{(\ast)0}D^{(\ast)0}$ decays in the near future. |
| title | Doubly charmed pentaquark states in QCD sum rules |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Lattice |
| url | https://arxiv.org/abs/2401.10078 |