# Production and decay of polarized hyperon-antihyperon pairs

## TL;DR

This paper discusses the production and decay of polarized hyperon-antihyperon pairs, highlighting their importance in understanding fundamental physics questions like confinement, CP violation, and matter-antimatter asymmetry, with recent experimental advances and future prospects.

## Contribution

It introduces new methods for analyzing hyperon-antihyperon pairs that achieve unprecedented precision, enabling deeper insights into fundamental physics puzzles.

## Key findings

- Development of new analysis methods for hyperon polarization
- Large data samples from BESIII enable precise measurements
- Future high-intensity facilities will enhance precision physics

## Abstract

Polarized hyperon-antihyperon pairs shed light on various unresolved puzzles in contemporary physics: How the strong interaction confines quarks into hadrons, how accurately the Standard Model describes microcosmos and even why our universe consists of so much more matter than antimatter. Thanks to their weak, parity violating decays, hyperons reveal their spin properties. This can be exploited e.g. the decomposition of the electromagnetic structure of hyperons, precision tests of flavour symmetry and searches for CP violation. At the BESIII experiment at BEPC-II, Beijing, China, hyperon-antihyperon pairs can be produced in abundance. Recently collected large data samples have triggered the development of new methods that provide unprecedented precision and a plethora of new results have emerged. When applied at future high-intensity facilities like PANDA and STCF, precision physics will be taken to a new level which can contribute to the solution to the aforementioned puzzles.