Measurement of Spin Density Matrix Elements in $\Lambda (1520)$ Photoproduction at 8.2-8.8 GeV

Abstract

We report on the measurement of spin density matrix elements of the $\Lambda (1520)$ in the photoproduction reaction $\gamma p\to \Lambda (1520)K^{+}$, via its subsequent decay to $K^{-}p$. The measurement was performed as part of the GlueX experimental program in Hall D at Jefferson Lab using a linearly polarized photon beam with $E_{\gamma }=$ 8.2-8.8 GeV. These are the first such measurements in this photon energy range. Results are presented in bins of momentum transfer squared, $-(t-t_{\text{0}})$. We compare the results with a Reggeon exchange model and determine that natural exchange amplitudes are dominant in $\Lambda (1520)$ photoproduction.

arXiv comment11 pages, 8 figures, accepted version

References in corpus (14)

• sPlot: a statistical tool to unfold data distributions
• The GlueX Beamline and Detector
• 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
• Lambda(1520,3/2^-) photoproduction reaction via gamma N -> K Lambda(1520)
• Near-threshold photoproduction of $\Lambda (1520)$ from protons and deuterons
• Lambda(1520) photoproduciton off the proton target with Regge contributions
• Design and construction of a high-energy photon polarimeter
• Theoretical study of the $\Lambda$(1520) photoproduction off proton target based on the new CLAS data
• Photon asymmetry measurements of $\overrightarrow{\gamma }\mathrm{p}\to {\pi }^0\mathrm{p}$ for E${}_{\gamma }$=320$-$650 MeV
• Differential cross sections for Λ(1520) using photoproduction at CLAS
• 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
• Single ${\pi }^0$ Production Off Neutrons Bound in Deuteron with Linearly Polarized Photons

Cited by in corpus (3)

• Measurement of Spin-Density Matrix Elements in $\rho (770)$ Production with a Linearly Polarized Photon Beam at $E_{\gamma }=8.2-8.8\text{GeV}$
• The strangeness program at GlueX
• Measurement of Spin Density Matrix Elements in $\Lambda (1520)$ Photoproduction at 8.2-8.8 GeV