Differential cross sections for Λ(1520) using photoproduction at CLAS

Abstract

The reaction $\gamma p\to K^{+}\Lambda (1520)$ using photoproduction data from the CLAS $g12$ experiment at Jefferson Lab is studied. The decay of $\Lambda (1520)$ into two exclusive channels, ${\Sigma }^{+}{\pi }^{-}$ and ${\Sigma }^{-}{\pi }^{+}$, is studied from the detected $K^{+}$, ${\pi }^{+}$, and ${\pi }^{-}$ particles. A good agreement is established for the $\Lambda (1520)$ differential cross sections with the previous CLAS measurements. The differential cross sections as a function of CM angle are extended to higher photon energies. Newly added are the differential cross sections as a function of invariant 4-momentum transfer $t$, which is the natural variable to use for a theoretical model based on a Regge-exchange reaction mechanism. No new $N^{\ast }$ resonances decaying into the $K^{+}\Lambda (1520)$ final state are found.

16 pages, 12 figures, 2 tables

References in corpus (10)

• Evidence for a missing nucleon resonance in kaon photoproduction
• The Flavor Structure of the Excited Baryon Spectra from Lattice QCD
• Gauge-invariant tree-level photoproduction amplitudes with form factors
• Differential Photoproduction Cross Sections of the Sigma0(1385), Lambda(1405), and Lambda(1520)
• Near-threshold Lambda(1520) production by the gamma p -> K+Lambda(1520) reaction at forward K+ angles
• Evidence for the $N^{\prime }(1720)3/2^{+}$ Nucleon Resonance from Combined Studies of CLAS ${\pi }^{+}{\pi }^{-}p$ Photo- and Electroproduction Data
• 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
• Properties of the Lambda(1520) Resonance from High-Precision Electroproduction Data

Cited by in corpus (3)

• Coupled-channel analysis of pion- and eta-electroproduction with the Jülich-Bonn-Washington model
• Measurement of Spin Density Matrix Elements in $\Lambda (1520)$ Photoproduction at 8.2-8.8 GeV
• High Energy Behaviour of Light Meson Photoproduction