The strangeness program at GlueX

Abstract

The GlueX experiment located at Jefferson Lab studies the spectrum of hadrons using photoproduction on a LH2 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 Σ0 beam asymmetries, Λ(1520) spin-density matrix elements and ongoing studies of the Λ(1405) lineshape. We also present our recent progress on measurements of ΛΛ̅ and Ξ(∗) photoproduction. Also, future prospects for strangeness measurements at GlueX are discussed.

$Λ\barΛ$ final-state interaction in the reactions $e^+e^-\to ϕΛ\bar Λ$ and $e^+e^- \to ηΛ\bar Λ$

“…Furthermore, there have been measurements of Λ Λ correlation functions in heavy-ion collisions and in high energy pp collisions by the ALICE Collaboration [20,21]. Finally, there are preliminary results from GlueX for γp → pΛ Λ [22,23]. See also the recent reviews [24,25].…”