The strangeness program at GlueX

Abstract

The GlueX experiment located at Jefferson Lab studies the spectrum of hadrons using photoproduction on a LH${}_2$ target in a wide variety of final states. With its detector system capable of measuring neutral and charged final state particles over almost the full solid angle, and very good particle identification capabilities, GlueX can measure many different hadrons containing strangeness. A linearly polarized photon beam allows the measurement of polarization observables, which contain information about the production mechanisms involved in generating strange particles in photoproduction. In addition, GlueX can perform precise cross-section measurements, which help to study the spectrum of strange hadrons. In this presentation, the GlueX experiment is introduced, and recent progress of its strangeness program is discussed. We present recent results on ${\Sigma }^0$ beam asymmetries, $\Lambda$(1520) spin-density matrix elements and ongoing studies of the $\Lambda$(1405) lineshape. We also present our recent progress on measurements of $\Lambda \bar{\Lambda }$ and ${\Xi }^{(\ast )}$ photoproduction. Also, future prospects for strangeness measurements at GlueX are discussed.

arXiv comment8 pages, Proceedings of the 14th International Conference on Hypernuclear and Strange Particle Physics (HYP2022), 27 June to 1 July 2022

References in corpus (11)

• Observation of a near-threshold enhancement in th p pbar mass spectrum from radiative J/psi-->gamma p pbar decays
• The GlueX Beamline and Detector
• Differential Photoproduction Cross Sections of the Sigma0(1385), Lambda(1405), and Lambda(1520)
• Forward-angle K+ Lambda photoproduction in a Regge-plus-resonance approach
• Observation of a cross-section enhancement near mass threshold in $e^{+}{e}^{-}\to \Lambda \bar{\Lambda }$
• Review of the $\mathbf{\Lambda }$(1405): A curious case of a strange-ness resonance
• Regge-plus-resonance treatment of the p(gamma,K^+)Sigma^0 and p(gamma,K^0)Sigma^+ reactions at forward kaon angles
• Measurement of Spin Density Matrix Elements in $\Lambda (1520)$ Photoproduction at 8.2-8.8 GeV
• Measurement of the Photon Beam Asymmetry in $\vec{\gamma }p\to K^{+}{\Sigma }^0$ at $E_{\gamma }=8.5$ GeV
• Baryon -- anti-Baryon Photoproduction
• Observation of $\gamma p\to \Lambda \bar{\Lambda }p$ with GlueX at Jefferson Lab

Cited by in corpus (2)

• The $\Xi (1620)$ and $\Xi (1690)$ molecular states from $S=-2$ meson-baryon interaction up to next-to-leading order
• $\Lambda \bar{\Lambda }$ final-state interaction in the reactions $e^{+}{e}^{-}\to \varphi \Lambda \bar{\Lambda }$ and $e^{+}{e}^{-}\to \eta \Lambda \bar{\Lambda }$