Gießen 2024 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 74: Invited Talks III

HK 74.1: Hauptvortrag

Freitag, 15. März 2024, 09:45–10:15, HBR 14: HS 1

Strange hadron spectroscopy at GlueX and beyond — •Peter Hurck — University of Glasgow, UK

Hadron spectroscopy has been successfully employed as a tool to study Quantum Chromodynamics for many years. While much progress has been made in the past in the study of states with the light up and down quarks and the heavy charm and bottom quarks, there has been little progress regarding states with strange quarks. For the baryon sector, a recent review on "Λ and Σ Resonances" in the PDG states that the "field is starved for data" [1]. The situation is similar for mesons. Several experimental campaigns are ongoing or in the planning stages to address this shortcoming and provide high quality data on hyperons and mesons with strange quarks.

The GlueX experiment, located at Jefferson Lab, studies the spectrum of hadrons using photoproduction on a LH2 target. With its detector system capable of measuring neutral and charged final state particles 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.

In this talk, the GlueX experiment is introduced, and recent progress of its strangeness program will be presented. In addition, prospects for strangeness measurements at other facilities, such as the KLong Facility at Jefferson Lab or AMBER at CERN, will be discussed.

[1] R.L. Workman et al. (Particle Data Group), Prog. Theor. Exp. Phys. 2022, 083C01 (2022) and 2023 update, Chapter 82.

Keywords: hadron spectroscopy; strangeness