Observation of charge-parity symmetry breaking in baryon decays.

ABSTRACT: The Standard Model of particle physics-the theory of particles and interactions at the smallest scale-predicts that matter and antimatter interact differently due to violation of the combined symmetry of charge conjugation (C) and parity (P). Charge conjugation transforms particles into their antimatter particles, whereas the parity transformation inverts spatial coordinates. This prediction applies to both mesons, which consist of a quark and an antiquark, and baryons, which are composed of three quarks. However, despite having been discovered in various meson decays, CP violation has yet to be observed in baryons, the type of matter that makes up the observable Universe. Here we report a study of the decay of the beauty baryon Λ0b to the pK^-π⁺π^- final sta

SUBMITTER: LHCb Collaboration 

PROVIDER: S-EPMC12310544 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature