Pentaquark searches at FOCUS

TL;DR

This study searched for pentaquarks in high-energy photoproduction experiments but found no evidence of their existence at the tested mass ranges and decay modes.

Contribution

The paper provides the first null results in the search for pentaquarks at specific mass ranges using multiple decay channels.

Findings

No evidence for pentaquarks at 1540, 1862, or 3099 MeV/$c^2$

Constraints on pentaquark production in photoproduction experiments

Results contribute to the understanding of pentaquark existence and properties

Abstract

We find no evidence for high-energy photoproduction of pentaquarks at 1540 MeV/$c^2$, 1862 MeV/$c^2$, or 3099 MeV/$c^2$ using decay modes $pK_S^0$, $\Xi^-\pi^-$, and $D^{(*)-}p$, respectively.