A Review of Hyperon Physics at BESIII Experiment

TL;DR

This review summarizes BESIII's significant contributions to hyperon physics, leveraging large datasets to explore polarization, CP violation, rare decays, pair production, and hyperon-nucleon interactions.

Contribution

It provides a comprehensive overview of BESIII's recent advances in hyperon physics, highlighting new experimental results enabled by high-statistics data.

Findings

Observation of hyperon polarization effects

Evidence for CP violation in hyperon decays

Measurements of hyperon pair production cross sections

Abstract

The BESIII Collaboration has collected large data samples from $e^+e^-$ collisions at center-of-mass energies ranging from 1.84 to 4.95 GeV, which include the world's largest charmonium sample, consisting of 10 billion $J/\psi$ and 3 billion $\psi(3686)$ events. These high-statistics datasets enable BESIII to carry out a wide range of studies in hyperon physics. In this article, we review the major achievements of the BESIII Collaboration in this field, which can be broadly categorized into four areas: hyperon polarization and $CP$ violation, rare hyperon decays, hyperon pair production, and hyperon-nucleon interactions.