Analysis of the $\gamma n\to K^{+}{\Sigma }^{-}(1385)$ photoproduction

Abstract

In our previous work [Phys. Rev. D $101$, 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.

arXiv comment7 pages, 7 figures. Accepted for publication in PRD

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Cited by in corpus (4)

• Pion Photoproduction off Nucleon with Hamiltonian Effective Field Theory
• Photo-production of lowest ${\Sigma }_{1/2^{-}}^{\ast }$ state within the Regge-effective Lagrangian approach
• Radiative decays of the $\Omega (2012)$ as a hadronic molecule
• Analysis of the data for $\gamma p\to f_1(1285)p$ photoproduction