$(J/ψ, J/ψ)$, and $(η_c, η_c)$ production through two intermediate photons in electron-positron annihilation at B-factories
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arXiv
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| Auteurs principaux: | , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866913386843865088 |
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| author | Bhatnagar, Shashank Negash, Hluf |
| author_facet | Bhatnagar, Shashank Negash, Hluf |
| contents | We study the processes, $e^- e^+ \rightarrow γ^* γ^* \rightarrow J/ψ+J/ψ$, and $e^- e^+ \rightarrow γ^* γ^* \rightarrow η_c+ η_c$ at $\sqrt{s}=10.6$ GeV in the framework of $4\times 4$ Bethe-Salpeter equation. For $J/ψ+J/ψ$ production, the dominant contribution is through fragmentation process, while for $η_c+η_c$ production, the quark rearrangement diagrams contribute. Our results of cross section for $J/ψ+J/ψ$ and $ψ(2S)+ψ(2S)$ are compatible with the experimental upper limits set by Belle Collaboration, while in the absence of experimental data for $η_c(1S)+η_c(1S)$, and $η_c(2S)+η_c(2S)$ production, we have given theoretical prediction of their cross sections, and compared with NRQCD prediction. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_07508 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | $(J/ψ, J/ψ)$, and $(η_c, η_c)$ production through two intermediate photons in electron-positron annihilation at B-factories Bhatnagar, Shashank Negash, Hluf High Energy Physics - Phenomenology We study the processes, $e^- e^+ \rightarrow γ^* γ^* \rightarrow J/ψ+J/ψ$, and $e^- e^+ \rightarrow γ^* γ^* \rightarrow η_c+ η_c$ at $\sqrt{s}=10.6$ GeV in the framework of $4\times 4$ Bethe-Salpeter equation. For $J/ψ+J/ψ$ production, the dominant contribution is through fragmentation process, while for $η_c+η_c$ production, the quark rearrangement diagrams contribute. Our results of cross section for $J/ψ+J/ψ$ and $ψ(2S)+ψ(2S)$ are compatible with the experimental upper limits set by Belle Collaboration, while in the absence of experimental data for $η_c(1S)+η_c(1S)$, and $η_c(2S)+η_c(2S)$ production, we have given theoretical prediction of their cross sections, and compared with NRQCD prediction. |
| title | $(J/ψ, J/ψ)$, and $(η_c, η_c)$ production through two intermediate photons in electron-positron annihilation at B-factories |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2406.07508 |