Charmed baryon in a Diquark model

TL;DR

This paper uses a diquark model to study single charmed baryons, predicting their masses and suggesting some may be pentaquark states with specific quantum numbers, indicating potential stability.

Contribution

It introduces a diquark-based approach to charmed baryons, providing mass predictions and proposing pentaquark structures for certain states.

Findings

Some baryon masses are smaller than previous predictions.

$ ext{Lambda}(2882)$ may be a pentaquark with $J^P=1/2^-$.

$ ext{Xi}(3125)$ may be a pentaquark with $J^P=1/2^+$.

Abstract

A diquark model is used to investigate single charmed baryons. In this model, baryon is composed of two diquarks and an antiquark. Masses of lowest lying states with $J^P= 1/2 ^ \pm$ are obtained. Some masses are smaller than other theoretic predictions which indicates that these baryons of pentaquark structure could be relatively stable. The results also show that $\Lambda(2882)$ may be a pentaquark with $J^P=1/2^-$ and $\Xi(3125)$ may be a pentaquark with $J^P=1/2^+$.