$\Xi$ spectroscopy in photoproduction on a proton target at Jefferson Lab

TL;DR

This paper reports on a large-scale photoproduction experiment at Jefferson Lab, measuring cross sections for cascade hyperon production and exploring excited states, providing valuable data for understanding hyperon spectroscopy.

Contribution

It presents the largest dataset for photon-proton reactions and preliminary cross section measurements for cascade hyperons in the 1.5-3.8 GeV energy range.

Findings

First large dataset for photon-proton reactions at Jefferson Lab

Preliminary cross section measurements for $\Xi^-(1320)$

Exploration of excited cascade states

Abstract

The CLAS Collaboration at Jefferson Lab conducted a photoproduction experiment on a proton target using a tagged photon beam with an energy range of 1.5-3.8 GeV during May-July 2004. With an integrated luminosity of about 75 $pb^{-1}$, this experiment provides the largest data set for photon-proton reactions ever collected. The reaction $\gamma p \to K^+K^+\Xi^{-}(1320)$ has been investigated and the preliminary results of the cross section measurement of $\Xi^-(1320)$ for the photon energy range of 2.7-3.8 GeV have been obtained. In a search for excited cascade states, the reaction of $\gamma p \to K^+K^+\pi^-(\Xi^0(1320))$ has also been explored.