Charmed baryon spectroscopy with Belle

TL;DR

The Belle collaboration's recent work on charmed baryon spectroscopy reports new baryon observations, evidence for additional states, and precise mass measurements, advancing understanding of heavy baryon structures.

Contribution

This study provides the first observation of the $ ext{Σ}_c(2800)$ isotriplet and evidence for $ ext{Ξ}_{cx}(2980)$ and $ ext{Ξ}_{cx}(3077)$ baryons, along with precise mass determinations.

Findings

Observation of $ ext{Σ}_c(2800)$ isotriplet

Evidence for $ ext{Ξ}_{cx}(2980)$ and $ ext{Ξ}_{cx}(3077)$ baryons

Precise mass measurements of $ ext{Ξ}_c$ and $ ext{Ξ}_c(2645)$

Abstract

Recent studies of charmed baryon spectroscopy, performed by the Belle collaboration, are briefly described. We report the observation of an isotriplet of baryons $\Sigma_c(2800)$ and evidence for two new baryons $\Xi_{cx}(2980)$ and $\Xi_{cx}(3077)$. Finally we present a precise determination of the masses of $\Xi_c$ and $\Xi_c(2645)$.