Report
Analysis of the $\gamma n \to K^+ \Sigma^-(1385)$ photoproduction
| العنوان: | Analysis of the $\gamma n \to K^+ \Sigma^-(1385)$ photoproduction |
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| المؤلفون: | Wang, Ai-Chao, Wei, Neng-Chang, Huang, Fei |
| المصدر: | Phys. Rev. D 105, 034017 (2022) |
| سنة النشر: | 2022 |
| المجموعة: | High Energy Physics - Phenomenology Nuclear Theory |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology, Nuclear Theory |
| الوصف: | In our previous work [Phys. Rev. D $\bf{101}$, 074025 (2020)], the photoproduction $\gamma p \to K^+ \Sigma^0(1385)$ has been investigated within an effective Lagrangian approach. There, the reaction amplitudes were constructed by considering the $t$-channel $K$ and $K^\ast(892)$ exchanges, $s$-channel $N$ contribution, $u$-channel $\Lambda$ exchange, generalized contact term, and a minimum number of $s$-channel $N$ and $\Delta$ resonance diagrams. It was found that the inclusion of one of the $N(1895){1/2}^-$, $\Delta(1900){1/2}^-$, and $\Delta(1930){5/2}^-$ resonances is essential to reproduce the available differential and total cross-section data for $\gamma p \to K^+ \Sigma^0(1385)$. In the present work, we employ the same model to study the photoproduction $\gamma n \to K^+ \Sigma^-(1385)$, with the purpose being to understand the reaction mechanism and, in particular, to figure out which one of the $N(1895){1/2}^-$, $\Delta(1900){1/2}^-$, and $\Delta(1930){5/2}^-$ resonances is really capable for a simultaneous description of the data for both $K^+ \Sigma^0(1385)$ and $K^+ \Sigma^-(1385)$ photoproduction reactions. The results show that the available data on differential and total cross sections and photo-beam asymmetries for $\gamma n \to K^+ \Sigma^-(1385)$ can be reproduced only with the inclusion of the $\Delta(1930){5/2}^-$ resonance rather than the other two. The generalized contact term and the $t$-channel $K$ exchange are found to dominate the background contributions. The resonance $\Delta(1930){5/2}^-$ provides the most important contributions in the whole energy region considered, and it is responsible for the bump structure exhibited in the total cross sections. Comment: 7 pages, 7 figures. Accepted for publication in PRD |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevD.105.034017 |
| URL الوصول: | http://arxiv.org/abs/2201.10778 |
| رقم الانضمام: | edsarx.2201.10778 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevD.105.034017 |
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