Near-threshold photoproduction of $\Lambda (1520)$ from protons and deuterons

Abstract

Photoproduction of $\Lambda$(1520) with liquid hydrogen and deuterium targets was examined at photon energies below 2.4 GeV in the SPring-8 LEPS experiment. For the first time, the differential cross sections were measured at low energies and with a deuterium target. A large asymmetry of the production cross sections from protons and neutrons was observed at backward K${}^{+/0}$ angles. This suggests the importance of the contact term, which coexists with t-channel K exchange under gauge invariance. This interpretation was compatible with the differential cross sections, decay asymmetry, and photon beam asymmetry measured in the production from protons at forward K${}^{+}$ angles.

arXiv comment5 pages and 4 figures. One reference added

References in corpus (17)

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• Photoproduction of Theta baryon from the neutron
• Lambda(1520,3/2^-) photoproduction reaction via gamma N -> K Lambda(1520)
• Coherent Theta^+ and Lambda(1520) photoproduction off the deuteron
• Electroproduction of the $\Lambda (1520)$ hyperon
• Suppression of Theta^+(J^P=3/2^(+,-)) photoproduction from the proton
• Coupling of \bar K*N to the Lambda(1520)
• KKbar photoproduction from protons
• 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 (19)

• Differential Photoproduction Cross Sections of the Sigma0(1385), Lambda(1405), and Lambda(1520)
• Odd Parity Light Baryon Resonances
• Near-threshold Lambda(1520) production by the gamma p -> K+Lambda(1520) reaction at forward K+ angles
• The role of the $N^{\ast }(2080)$ resonance in the $\vec{\gamma }p\to K^{+}\Lambda (1520)$ reaction
• The roles of nucleon resonances in $\Lambda$(1520) photoproduciton off proton
• Re-analysis of the $\Lambda (1520)$ photoproduction reaction
• Lambda(1520) photoproduciton off the proton target with Regge contributions
• A coupled-channel analysis for phi-photoproduction with Lambda(1520)
• Theoretical study of the $\Lambda$(1520) photoproduction off proton target based on the new CLAS data
• Studies on the polarization transfer coefficients C_x and C_z in the gamma p -> K^+ Lambda(1520,3/2^-) reaction process
• Differential cross section and photon beam asymmetry for the gamma p -> pi+ n reaction at forward pi+ angles at Egamma=1.5-2.95 GeV
• Charged pion photoproduction with the Delta(1232) baryon beyond the resonance region
• Differential cross sections for Λ(1520) using photoproduction at CLAS
• Electroproduction of $\Lambda (1520)$ off the nucleon target with the nucleon resonances
• Photoproduction of $\gamma p\to K^{+}{\Lambda }^{\ast }(1520)$ and decay of ${\Lambda }^{\ast }(1520)\to K^{-}p$ in the Reggeized framework
• Measurement of Spin Density Matrix Elements in $\Lambda (1520)$ Photoproduction at 8.2-8.8 GeV
• The role of $N^{\ast }(2120)$ nucleon resonance in $K\Lambda (1520)$ photon and hadronic productions
• Producing $\Lambda (1405)$ and $\Lambda (1520)$ in ${\pi }^{-}p$ reaction to explore their inner structures
• Monitoring the build-up of hydrogen polarization for polarized Hydrogen-Deuteride (HD) targets with NMR at 17 Tesla