Understanding of the BESIII measurement of (anti)hyperon-nucleon scattering
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866929718579691520 |
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| author | Wang, Xiao-Yun Gao, Yuan Liu, Xiang |
| author_facet | Wang, Xiao-Yun Gao, Yuan Liu, Xiang |
| contents | Focusing on the recent measurements of the scattering processes $\barΛ p \rightarrow \barΛ p$ and $Λp \rightarrow Λp$ reported by BESIII, we offer a dynamical interpretation of the differences in the measured total and differential cross sections for both processes. This discrepancy arises because the $u$-channel contribution is forbidden for $\barΛ p \rightarrow \barΛ p$ but allowed for $Λp \rightarrow Λp$. Additionally, we examine the enhancement effect in the forward angle region of the differential cross section for $\barΛ p$ elastic scattering, attributed to the $t$-channel contribution. This work serves as a test to the scattering mechanism involved in these reactions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_17842 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Understanding of the BESIII measurement of (anti)hyperon-nucleon scattering Wang, Xiao-Yun Gao, Yuan Liu, Xiang High Energy Physics - Phenomenology Focusing on the recent measurements of the scattering processes $\barΛ p \rightarrow \barΛ p$ and $Λp \rightarrow Λp$ reported by BESIII, we offer a dynamical interpretation of the differences in the measured total and differential cross sections for both processes. This discrepancy arises because the $u$-channel contribution is forbidden for $\barΛ p \rightarrow \barΛ p$ but allowed for $Λp \rightarrow Λp$. Additionally, we examine the enhancement effect in the forward angle region of the differential cross section for $\barΛ p$ elastic scattering, attributed to the $t$-channel contribution. This work serves as a test to the scattering mechanism involved in these reactions. |
| title | Understanding of the BESIII measurement of (anti)hyperon-nucleon scattering |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2410.17842 |