Fermi coupling constant

The Fermi coupling constant, often denoted as \( G_F \), is a fundamental parameter in physics that quantifies the strength of the weak nuclear force—the force responsible for certain types of radioactive decay and interactions between particles like electrons and neutrinos. It helps scientists understand how often these weak interactions occur. Think of it as a measure of the "intensity" of the weak force, much like how gravity's strength determines how objects attract each other. Its value is crucial for precise calculations in particle physics and understanding fundamental processes in the universe.