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| Main Authors: | , , |
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| Format: | Preprint |
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2025
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| Online Access: | https://arxiv.org/abs/2508.08694 |
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| _version_ | 1866914129297539072 |
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| author | Zhang, Xiao-Yu Song, Yi-Lin Guo, Feng-Kun |
| author_facet | Zhang, Xiao-Yu Song, Yi-Lin Guo, Feng-Kun |
| contents | The discoveries of the hidden-charm $P_c$ pentaquarks by the LHCb Collaboration have been not confirmed by other experiments yet. It is desirable to investigate the feasibility of observing them in other experiments. We present an order-of-magnitude estimate of the cross section of the $e^+e^-\to J/ψp \bar p$ process, where the hidden-charm pentaquarks may be searched for, and find it to be of $\mathcal{O}(4~\text{fb})$ when the $e^+e^-$ c.m. energy is around 6 GeV. The cross section for $e^+e^-\to P_c \bar p$ is then estimated to be $\lesssim \mathcal{O}(0.1~\text{pb})$. Thus, it is promising to search for $P_c$ at the future high-luminosity super tau-charm facilities with annual integrated luminosity about $1~ab^{-1}$. We also predict the branching fraction of $Υ\to J/ψp\bar p$ to be of $\mathcal{O}(2\times 10^{-6})$, which can be tested at $B$ factories. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_08694 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Production of $J/ψp \bar p$ in electron-positron collisions Zhang, Xiao-Yu Song, Yi-Lin Guo, Feng-Kun High Energy Physics - Phenomenology High Energy Physics - Experiment The discoveries of the hidden-charm $P_c$ pentaquarks by the LHCb Collaboration have been not confirmed by other experiments yet. It is desirable to investigate the feasibility of observing them in other experiments. We present an order-of-magnitude estimate of the cross section of the $e^+e^-\to J/ψp \bar p$ process, where the hidden-charm pentaquarks may be searched for, and find it to be of $\mathcal{O}(4~\text{fb})$ when the $e^+e^-$ c.m. energy is around 6 GeV. The cross section for $e^+e^-\to P_c \bar p$ is then estimated to be $\lesssim \mathcal{O}(0.1~\text{pb})$. Thus, it is promising to search for $P_c$ at the future high-luminosity super tau-charm facilities with annual integrated luminosity about $1~ab^{-1}$. We also predict the branching fraction of $Υ\to J/ψp\bar p$ to be of $\mathcal{O}(2\times 10^{-6})$, which can be tested at $B$ factories. |
| title | Production of $J/ψp \bar p$ in electron-positron collisions |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2508.08694 |