Year: 2016
Type: article
Abstract: Inspired by the preliminary experimental data by the CLAS Collaboration, the ${K}^{*0}\mathrm{\ensuremath{\Lambda}}$ photoproduction off a neutron is studied within an effective Lagrangian approach. The contributions from the Born terms including $s, u$, and $t$ channels are considered to calculate the amplitude, with which the cross sections are calculated and compared with preliminary CLAS data. The theoretical results indicate that the contribution from the $t$-channel $K$ exchange plays a dominant role for the ${K}^{*0}\mathrm{\ensuremath{\Lambda}}$ photoproduction. The contribution from the $\ensuremath{\kappa}$ exchange is found one order of magnitude smaller than that from the $K$ exchange. Both the Regge model and the Feynman model are applied to treat the $t$-channel contribution. The discrepancy between two models is found small in the energy range of CLAS data and predicted to become obvious at energies higher than 3 GeV. More precise experimental data especially at backward angles will be helpful to further understand the interaction mechanism of the ${K}^{*0}\mathrm{\ensuremath{\Lambda}}$ photoproduction.
Source: Physical Review C
Authors: Xiao-Yun Wang, Jun He
Language: Latvian
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Award: G6162713937
OpenAlex ID: W2176636042