Baryon decays to purely baryonic final states

TL;DR

This paper explores purely baryonic decay processes of the $\\Lambda_b^0$ baryon, aiming to deepen understanding of $C ext{-}P$ violation and matter-antimatter asymmetry in the universe.

Contribution

It introduces the study of purely baryonic decay processes, a previously unexplored area, as a new avenue in flavor physics and $C ext{-}P$ violation research.

Findings

Discussion of purely baryonic decay processes as a new research area

Connection between these decays and matter-antimatter asymmetry

Potential to advance understanding of $C ext{-}P$ violation

Abstract

The LHCb collaboration has presented first experimental evidence that spin-carrying matter and antimatter differ. The study looked at four-body decays of the $\Lambda_b^0$ baryon. Differences in the behaviour of matter and antimatter are associated with the non-invariance of fundamental interactions under the combined charge-conjugation and parity transformations, known as $C\!P$ violation. We discuss purely baryonic decay processes, i.e. decay processes involving only spin-carrying particles. They are yet unexplored elementary processes. Their study opens a new chapter of flavour physics in the route towards a better understanding of $C\!P$ violation. It may help us to understand the observed matter and antimatter asymmetry of the Universe.