Strangeness photoproduction at the BGO-OD experiment

TL;DR

The paper discusses the capabilities of the BGO-OD experiment at ELSA for studying strangeness photoproduction at extreme forward angles, enabling detailed measurements of hyperon and kaon production.

Contribution

It introduces the BGO-OD experimental setup and its application to measure various strangeness production processes at forward angles.

Findings

Successful detection of forward-going kaons and hyperon decay products.

Measurement of cross sections for gamma p to K+ Lambda/Sigma0.

Analysis of K0 Sigma0 and K+ Lambda(1405) production channels.

Abstract

The BGO-OD experiment at the University of Bonn's ELSA accelerator facility in Germany is ideally suited to investigate photoproduction at extreme forward angles. It combines a highly segmented BGO electromagnetic calorimeter at central angles and an open dipole magnetic spectrometer in the forward direction. This allows the detection of forward going kaons, and complex final states of mixed charge from hyperon decays. Current projects at the BGO-OD experiment include strangeness production of $\gamma p \rightarrow K^+ \Lambda/\Sigma^0$ at forward angles, $K^0\Sigma^0$ with a deuteron target and $K^+\Lambda(1405)$ line shape and cross section measurements.