English

Photoproduction of $\gamma N\to K^+ \Sigma^*(1385)$ in the Reggeized framework

Nuclear Theory 2017-06-28 v2 High Energy Physics - Phenomenology

Abstract

Photoproduction of KΣ(1385) K\Sigma^{*}(1385) on the nucleon is investigated within the Regge framework and the reaction mechanism is analyzed based on the data existing in the channels γpK+Σ0\gamma p\to K^+\Sigma^{*0} and γnK+Σ\gamma n\to K^+\Sigma^{*-}. The Reggeization of the tt-channel meson exchanges K(494)+K(892)+K2(1430)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\Sigma^* 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 KK and KK^* and from the duality and vector dominance for the K2K_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 KK exchange with the role of the K2K_2^* following rather than the KK^*.

Keywords

Cite

@article{arxiv.1702.03674,
  title  = {Photoproduction of $\gamma N\to K^+ \Sigma^*(1385)$ in the Reggeized framework},
  author = {Byung-Geel Yu and Kook-Jin Kong},
  journal= {arXiv preprint arXiv:1702.03674},
  year   = {2017}
}

Comments

9 pages, 7 figures