Measurements of the cross sections of $e^{+}e^{-}\to Σ_{c}\barΣ_{c}$ and $Λ_c^{+}\barΣ_{c}^{-}$ near kinematic thresholds
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866909750736715776 |
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| author | BESIII Collaboration |
| author_facet | BESIII Collaboration |
| contents | Based on $e^{+}e^{-}$ annihilation data collected with the BESIII detector at the BEPCII collider, searches for the $e^{+}e^{-}\toΣ_{c}\barΣ_{c}$ ($Σ_{c}^{+}\barΣ_{c}^{-}$, $Σ_{c}^{0}\barΣ_{c}^{0}$ and $Σ_{c}^{++}\barΣ_{c}^{--}$) processes, as well as for the isospin-violating process $e^{+}e^{-}\toΛ_c^{+}\barΣ_{c}^{-}$, are conducted for the first time at $\sqrt{s}=4.750$, $4.781$, $4.843$, $4.918$, and $4.951$ GeV. As no signals are observed for all the above channels, the upper limits on their Born cross sections at the 90$\%$ confidence level are reported. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_16871 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Measurements of the cross sections of $e^{+}e^{-}\to Σ_{c}\barΣ_{c}$ and $Λ_c^{+}\barΣ_{c}^{-}$ near kinematic thresholds BESIII Collaboration High Energy Physics - Experiment Based on $e^{+}e^{-}$ annihilation data collected with the BESIII detector at the BEPCII collider, searches for the $e^{+}e^{-}\toΣ_{c}\barΣ_{c}$ ($Σ_{c}^{+}\barΣ_{c}^{-}$, $Σ_{c}^{0}\barΣ_{c}^{0}$ and $Σ_{c}^{++}\barΣ_{c}^{--}$) processes, as well as for the isospin-violating process $e^{+}e^{-}\toΛ_c^{+}\barΣ_{c}^{-}$, are conducted for the first time at $\sqrt{s}=4.750$, $4.781$, $4.843$, $4.918$, and $4.951$ GeV. As no signals are observed for all the above channels, the upper limits on their Born cross sections at the 90$\%$ confidence level are reported. |
| title | Measurements of the cross sections of $e^{+}e^{-}\to Σ_{c}\barΣ_{c}$ and $Λ_c^{+}\barΣ_{c}^{-}$ near kinematic thresholds |
| topic | High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2508.16871 |