Differential Photoproduction Cross Sections of the Sigma0(1385), Lambda(1405), and Lambda(1520)

Abstract

We report the exclusive photoproduction cross sections for the Sigma(1385), Lambda(1405), and Lambda(1520) in the reactions gamma + p -> K+ + Y* using the CLAS detector for energies from near the respective production thresholds up to a center-of-mass energy W of 2.85 GeV. The differential cross sections are integrated to give the total exclusive cross sections for each hyperon. Comparisons are made to current theoretical models based on the effective Lagrangian approach and fitted to previous data. The accuracy of these models is seen to vary widely. The cross sections for the Lambda(1405) region are strikingly different for the Sigma+pi-, Sigma0 pi0, and Sigma- pi+ decay channels, indicating the effect of isospin interference, especially at W values close to the threshold.

21 pages, 18 figures, to be submitted to PRC, revised to include a missing reference

References in corpus (19)

• The nature of the Lambda(1405) resonance in chiral dynamics
• Differential Cross Sections for gamma + p --> K+ + Y for Lambda and Sigma0 Hyperons
• Measurement of the Sigma pi photoproduction line shapes near the Lambda(1405)
• Photoproduction of the Lambda(1405) on the proton and nuclei
• Photoproduction of Lambda(1405) and Sigma^{0}(1385) on the proton at E_γ= 1.5-2.4 GeV
• Nucleon and Delta resonances in K Sigma(1385) photoproduction from nucleons
• Differential cross sections and spin density matrix elements for the reaction gamma p -> p omega
• Near-threshold Lambda(1520) production by the gamma p -> K+Lambda(1520) reaction at forward K+ angles
• Lambda(1520,3/2^-) photoproduction reaction via gamma N -> K Lambda(1520)
• The role of the $N^{\ast }(2080)$ resonance in the $\vec{\gamma }p\to K^{+}\Lambda (1520)$ reaction
• Cross Sections and Beam Asymmetries for K+ Sigma*- photoproduction from the deuteron at 1.5-2.4 GeV
• Near-threshold photoproduction of $\Lambda (1520)$ from protons and deuterons
• The roles of nucleon resonances in $\Lambda$(1520) photoproduciton off proton
• Lambda(1520) photoproduciton off the proton target with Regge contributions
• Electroproduction of the $\Lambda (1520)$ hyperon
• Scaling and Resonances in Elementary K^+ Lambda Photoproduction
• KKbar photoproduction from protons
• Isospin Decomposition of the Photoproduced Σπ System Near the Λ(1405)
• Theta+ formation in inclusive gamma D -> pK- X

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• Photoproduction $\gamma p\to K^{+}\Lambda (1520)$ in an effective Lagrangian approach
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• Faddeev approach to the reaction $K^{-}d\to \pi \Sigma n$ at $p_K=1$ GeV/c
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• The strangeness program at GlueX
• Analysis of the $\gamma n\to K^{+}{\Sigma }^{-}(1385)$ photoproduction
• Photo- and electroproduction of $\Lambda (1405)$ via ${\gamma }^{(\ast )}p\to K^{+}{\pi }^{+}{\Sigma }^{-}$
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