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	CP対称性の破れ測定	有効場理論
分野	素粒子物理学	素粒子物理学
系統	Process / pipeline	Process / pipeline
提唱年	1964	1979
提唱者	Fitch, Cronin, and collaborators	Steven Weinberg
種類	Asymmetry measurement	Model-independent approach
原典	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.
別名	CP asymmetry, matter-antimatter asymmetry, T-symmetry violation	EFT, effective theory, operator product expansion
関連	3	3
概要	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.