K-Long Facility for JLab and its Scientific Potential

TL;DR

This paper proposes a new KL-beam facility at JLab to study hyperon spectroscopy through two-body reactions, aiming to improve understanding of strange resonances and test QCD-inspired models.

Contribution

Introduction of a secondary KL-beam facility at JLab for hyperon spectroscopy, enabling detailed measurements to constrain theoretical models.

Findings

Enhanced data for hyperon resonance analysis

Reduced uncertainties in strange resonance properties

Benchmark data for QCD and LQCD comparisons

Abstract

Our main interest in creating a secondary high-quality KL-beam is to investigate hyperon spectroscopy through both formation and production processes. We propose to study two-body reactions induced by the KL-beam on the proton target. The experiment should measure both differential cross sections and self-analyzed polarizations of the produced $\Lambda$-, $\Sigma$-, and $\Xi$-hyperons using the GlueX detector at the Jefferson Lab Hall D. New data will greatly constrain partial-wave analysis and reduce model-dependent uncertainties in the extraction of strange resonance properties, providing a new benchmark for comparisons with QCD-inspired models and LQCD calculations. The measurements will span c.m. $\cos\theta$ from -0.95 to 0.95 in c.m. range above W = 1490MeV and up to 4000 MeV.