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	Ефективна теорија поља	PDF Fitting
Oblast	Fizika čestica	Fizika čestica
Porodica	Process / pipeline	Process / pipeline
Godina nastanka	1979	1969
Tvorac	Steven Weinberg	James Bjorken and collaborators
Tip	Model-independent approach	QCD framework
Temeljni izvor	Weinberg, S. (1979). Baryon and lepton nonconserving processes. Physical Review Letters, 43(21), 1566.	Bjorken, J. D. (1969). Asymptotic sum rules at infinite momentum. Physical Review, 179(5), 1547.
Drugi nazivi	EFT, effective theory, operator product expansion	PDF, structure function, parton model
Srodne	3	3
Sažetak	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.	Parton Distribution Function (PDF) fitting is the process of determining the probability distributions of quarks and gluons inside hadrons using high-energy collision data. PDFs are fundamental inputs to all hadron collider phenomenology, essential for predicting cross-sections, designing triggers, and interpreting new physics searches at the Large Hadron Collider.