The role of the $N^{\ast }(2080)$ resonance in the $\vec{\gamma }p\to K^{+}\Lambda (1520)$ reaction

Abstract

We investigate the $\Lambda (1520)$ photo-production in the $\vec{\gamma }p\to K^{+}\Lambda (1520)$ reaction within the effective Lagrangian method near threshold. In addition to the "background" contributions from the contact, $t-$channel $K$ exchange, and $s-$channel nucleon pole terms, which were already considered in previous works, the contribution from the nucleon resonance $N^{\ast }(2080)$ (spin-parity $J^P=3/2^{-}$) is also considered. We show that the inclusion of the nucleon resonance $N^{\ast }(2080)$ leads to a fairly good description of the new LEPS differential cross section data, and that these measurements can be used to determine some of the properties of this latter resonance. However, serious discrepancies appear when the predictions of the model are compared to the photon-beam asymmetry also measured by the LEPS Collaboration.

9 pages,6 figures, 1 table

References in corpus (5)

• Nucleon and Delta resonances in K Sigma(1385) photoproduction from nucleons
• Photon induced Lambda(1520) production and the role of the K^* exchange
• Near-threshold photoproduction of $\Lambda (1520)$ from protons and deuterons
• Test of the reaction mechanism for gamma N -> K Lambda(1520) using the polarized photon
• Theta+ formation in inclusive gamma D -> pK- X

Cited by in corpus (10)

• The internal structures of the nucleon resonances $N(1875)$ and $N(2120)$
• Triangular singularity and a possible $\varphi p$ resonance in the ${\Lambda }_c^{+}\to {\pi }^0\varphi p$ decay
• Theoretical study of the $\Lambda$(1520) photoproduction off proton target based on the new CLAS data
• Photoproduction $\gamma p\to K^{+}\Lambda (1520)$ in an effective Lagrangian approach
• The molecular nature of some exotic hadrons
• Prospects for detecting the hidden-strange pentaquarklike state $N^{\ast }(2080)$ in the ${\pi }^{-}p\to \varphi n$ reaction
• Production potential of hidden-strange molecular pentaquarks through the ${\pi }^{-}p\to K^{\ast }\Sigma$ process
• Producing $\Lambda (1405)$ and $\Lambda (1520)$ in ${\pi }^{-}p$ reaction to explore their inner structures
• Photoproduction $\gamma p\to K^{+}\Lambda (1690)$ in an effective Lagrangian approach
• Role of the $\Lambda (1600)$ in the $K^{-}p\to \Lambda {\pi }^0{\pi }^0$ reaction