Molecular pentaquark states with open charm and bottom flavors
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| Format: | Preprint |
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2023
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| _version_ | 1866910307189784576 |
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| author | Lin, Jia-Xin Chen, Hua-Xing Liang, Wei-Hong Liu, Wen-Ying Zhou, Dan |
| author_facet | Lin, Jia-Xin Chen, Hua-Xing Liang, Wei-Hong Liu, Wen-Ying Zhou, Dan |
| contents | We study the possibly-existing molecular pentaquark states with open charm and bottom flavors, {\it i.e.}, the states with the quark contents $c\bar{b}qqq$ and $b\bar{c}qqq$ ($q=u,d,s$). We investigate the meson-baryon interactions through the coupled-channel unitary approach within the local hidden-gauge formalism, and extract the poles by solving the Bethe-Salpeter equation in coupled channels. These poles qualify as molecular pentaquark states, which are dynamically generated from the meson-baryon interactions through the exchange of vector mesons. Our results suggest the existence of the $Σ_c^{(*)} B^{(*)}$ and $Σ_b^{(*)} \bar{D}^{(*)}$ molecular states with isospin $I=1/2$, the $Ξ_c^{(\prime,*)} B^{(*)}$ and $Ξ_b^{(\prime,*)} \bar{D}^{(*)}$ molecular states with isospin $I=0$ and $I=1$, as well as the $Ω_c^{(*)} B^{(*)}$ and $Ω_b^{(*)} \bar D^{(*)}$ molecular states with isospin $I=1/2$. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2308_01007 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Molecular pentaquark states with open charm and bottom flavors Lin, Jia-Xin Chen, Hua-Xing Liang, Wei-Hong Liu, Wen-Ying Zhou, Dan High Energy Physics - Phenomenology High Energy Physics - Experiment We study the possibly-existing molecular pentaquark states with open charm and bottom flavors, {\it i.e.}, the states with the quark contents $c\bar{b}qqq$ and $b\bar{c}qqq$ ($q=u,d,s$). We investigate the meson-baryon interactions through the coupled-channel unitary approach within the local hidden-gauge formalism, and extract the poles by solving the Bethe-Salpeter equation in coupled channels. These poles qualify as molecular pentaquark states, which are dynamically generated from the meson-baryon interactions through the exchange of vector mesons. Our results suggest the existence of the $Σ_c^{(*)} B^{(*)}$ and $Σ_b^{(*)} \bar{D}^{(*)}$ molecular states with isospin $I=1/2$, the $Ξ_c^{(\prime,*)} B^{(*)}$ and $Ξ_b^{(\prime,*)} \bar{D}^{(*)}$ molecular states with isospin $I=0$ and $I=1$, as well as the $Ω_c^{(*)} B^{(*)}$ and $Ω_b^{(*)} \bar D^{(*)}$ molecular states with isospin $I=1/2$. |
| title | Molecular pentaquark states with open charm and bottom flavors |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2308.01007 |