The $B^{(*)}\bar{K}^{(*)}$-coupled-channel system in the hidden-gauge approach
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| Format: | Preprint |
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2026
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| _version_ | 1866908921368674304 |
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| author | Sánchez-Illana, J. Molina, R. Shi, Pan-Pan |
| author_facet | Sánchez-Illana, J. Molina, R. Shi, Pan-Pan |
| contents | In this work we provide predictions for bottom-strange molecular states within the Hidden Gauge Formalism. We study the coupled-channel scattering of $B^{(*)}\bar{K}^{(*)}$ states and, by fixing only one free parameter to obtain the mass of a new excited $B_s^0$ state seen by the LHCb, we predict the pole parameters of six states in this sector. Concretely, we get that the masses of the flavor partners of the $D_{s0}(2317)$ and $D_{s1}(2460)$ states in the bottom sector are $5760$ and $5802$ MeV for the $B\bar{K}$ ($J^P=0^+$) and $B^{*}\bar{K}$ ($1^+$) states, respectively. Moreover, the recently seen states by the LHCb with masses around $6100$ and $6160$ MeV can be interpreted as $B\bar{K}^*$ and $B^*\bar{K}^*$ molecular states, according to reasonable values of the pole parameters and the splitting between these two states obtained in our calculation. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2603_28649 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | The $B^{(*)}\bar{K}^{(*)}$-coupled-channel system in the hidden-gauge approach Sánchez-Illana, J. Molina, R. Shi, Pan-Pan High Energy Physics - Phenomenology In this work we provide predictions for bottom-strange molecular states within the Hidden Gauge Formalism. We study the coupled-channel scattering of $B^{(*)}\bar{K}^{(*)}$ states and, by fixing only one free parameter to obtain the mass of a new excited $B_s^0$ state seen by the LHCb, we predict the pole parameters of six states in this sector. Concretely, we get that the masses of the flavor partners of the $D_{s0}(2317)$ and $D_{s1}(2460)$ states in the bottom sector are $5760$ and $5802$ MeV for the $B\bar{K}$ ($J^P=0^+$) and $B^{*}\bar{K}$ ($1^+$) states, respectively. Moreover, the recently seen states by the LHCb with masses around $6100$ and $6160$ MeV can be interpreted as $B\bar{K}^*$ and $B^*\bar{K}^*$ molecular states, according to reasonable values of the pole parameters and the splitting between these two states obtained in our calculation. |
| title | The $B^{(*)}\bar{K}^{(*)}$-coupled-channel system in the hidden-gauge approach |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2603.28649 |