A function named for this letter is defined as the
A function named for this letter is defined as the partial derivative of g with respect to the natural log of mu, and gives the dependence of a coupling parameter on the energy scale. Another quantity denoted by this letter is equal to the derivative of the natural log of the number of microstates with respect to energy. That quantity named for this letter is the inverse of (*) kT. In a phenomenon named for it, a W boson transforms an up quark to a down quark, changing the atomic number by 1. For 10 points, name this form of nuclear decay that produces an antineutrino and electron.
A function named for this letter is defined as the partial derivative of g with respect to the natural log of mu, and gives the dependence of a coupling parameter on the energy scale.