Comparer des méthodes

	Mesure de la violation de CP	Théorie des champs effectifs
Domaine	Physique des particules	Physique des particules
Famille	Process / pipeline	Process / pipeline
Année d'origine	1964	1979
Auteur d'origine	Fitch, Cronin, and collaborators	Steven Weinberg
Type	Asymmetry measurement	Model-independent approach
Source fondatrice	Christenson, J. H., et al. (1964). Evidence for the 2π decay of the K₂⁰ meson. Physical Review Letters, 13(4), 138.	Weinberg, S. (1979). Baryon and lepton nonconserving processes. Physical Review Letters, 43(21), 1566.
Alias	CP asymmetry, matter-antimatter asymmetry, T-symmetry violation	EFT, effective theory, operator product expansion
Apparentées	3	3
Résumé	Charge-Parity (CP) violation measurement is the experimental study of asymmetries between particle and antiparticle processes, a fundamental probe of physics beyond the Standard Model. By comparing decay rates and asymmetries in kaons, B mesons, and neutrinos, physicists constrain new sources of CP violation and address the cosmological matter-antimatter imbalance.	Effective Field Theory (EFT) is a general framework for studying physics at low energies in terms of the relevant degrees of freedom, without requiring complete knowledge of high-energy physics. By expanding in powers of energy, EFT provides model-independent parameterizations of new physics effects and systematic methods for computing precision predictions of the Standard Model.