Wilson coefficients evolve under RG between scales: dC/d ln mu = gamma C + O(alpha^2); anomalous dimension matrix gamma computed at LO then NLO + NNLO; resums log enhancements ln(M_W/m_b) in B-physics.
Wilson coefficients evolve under RG between scales: dC/d ln mu = gamma C + O(alpha^2); anomalous dimension matrix gamma computed at LO then NLO + NNLO; resums log enhancements ln(M_W/m_b) in B-physics.