Abstract We present an analytical solution for the evolution of parton distributions incorporating mixed-order QCD ⊗ QED corrections, addressing both polarized and unpolarized cases. Using the Altarelli–Parisi kernels extended to mixed order, we solve the DGLAP equations exactly in Mellin N -space and derive the associated Wilson coefficients for the polarized structure function g₁. g 1. Our analytical approach improves computational efficiency and enhances the precision of theoretical predictions in observables sensitive to QED corrections, with relevance for current and future phenomenological applications.
Sassot et al. (Thu,) studied this question.
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