9–11 Dec 2025
Facultat de Física, Universitat de Barcelona
Europe/Madrid timezone

The KLong Facility in Hall D at Jefferson Lab

9 Dec 2025, 15:30
30m
DAM 7.24 Room (Facultat de Física, Universitat de Barcelona)

DAM 7.24 Room

Facultat de Física, Universitat de Barcelona

Carrer Martí i Franquès, 1 08028 - Barcelona, Spain
Talks CLAS / EIC

Speaker

Stuart Fegan (University of York)

Description

The KLong Experiment in Jefferson Lab Hall D will use a secondary beam of neutral kaons and the GlueX experimental setup to perform strange hadron spectroscopy. By achieving a flux on the order of $1×10^{4}$ $K_{L}$/sec, KLF will allow a broad range of measurements that improve the statistics of previous world data by several orders of magnitude.

The experiment will measure both differential cross sections and self-analysed polarisations of the produced $\Lambda$, $\Sigma$, $\Xi$ and $\Omega$ hyperons spanning the mass range W = 1490 MeV to 2500 MeV. KLF data will significantly constrain partial wave analyses and reduce model-dependent uncertainties in the extraction of the properties and pole positions of the strange hyperon resonances, as well as establish the orbitally excited multiplets in the spectra of the $\Xi$ and $\Omega$ hyperons. The proposed facility will also explore the strange meson sector through measurements of the final state $K\pi$ system up to 2 GeV invariant mass, and with the addition of nuclear emulsion detectors for high-resolution tracking, contribute to studies of hypernuclei.

This talk will give an overview of the KLong Facility design, current status, and prospects for its impact in strangeness spectroscopy.

Author

Stuart Fegan (University of York)

Presentation materials