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arXiv · 1702.03674

Photoproduction of $γN\to K^+ Σ^*(1385)$ in the Reggeized framework

Byung-Geel Yu·Kook-Jin Kong
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Abstract

Photoproduction of $ KΣ^{*}(1385)$ on the nucleon is investigated within the Regge framework and the reaction mechanism is analyzed based on the data existing in the channels $γp\to K^+Σ^{*0}$ and $γn\to K^+Σ^{*-}$. The Reggeization of the $t$-channel meson exchanges $K(494)+K^*(892)+K_2^*(1430)$ is employed to construct the photoproduction amplitude. The Rarita-Schwinger formalism is applied for the spin-3/2$^+$ strangeness-baryon $Σ^*$ with a special gauge prescription utilized for the convergence of these reaction processes. Within a set of coupling constants determined from the symmetry arguement for the $K$ and $K^*$ and from the duality and vector dominance for the $K_2^*$, the data of the both processes are reproduced to a good degree. The production mechanism of these processes are featured by the dominance of the contact term plus the $K$ exchange with the role of the $K_2^*$ following rather than the $K^*$.

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Byung-Geel Yu, Kook-Jin Kong. 2017-02-19. Photoproduction of $γN\to K^+ Σ^*(1385)$ in the Reggeized framework. https://doi.org/10.1103/physrevc.95.065210

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