مقایسهٔ روش‌ها

	نظریه میدان مؤثر	برازش تابع توزیع پارتون (PDF)
حوزه	فیزیک ذرات	فیزیک ذرات
خانواده	Process / pipeline	Process / pipeline
سال پیدایش	1979	1969
پدیدآور	Steven Weinberg	James Bjorken and collaborators
نوع	Model-independent approach	QCD framework
منبع بنیادین	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.
نام‌های دیگر	EFT, effective theory, operator product expansion	PDF, structure function, parton model
مرتبط	3	3
خلاصه	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.