Initial state QED radiation at next-to-leading logarithmic accuracy for future $e^+e^−$ colliders
November 23, 2022
We present state-of-the-art results for the QED Parton Distribution Functions (PDFs), which have been recently pushed up to next-to-leading logarithmic (NLL) accuracy. NLL PDFs properly take into account the mixing between the electron/positron with the photon and the other fermions, running-$\alpha$ effects and the dependence on the renormalisation and factorisation scheme. We discuss the inclusion of NLL PDFs in the automated Madgraph5_aMC@NLO framework, which have been equipped with next-to-leading order (NLO) electroweak corrections, and we present first NLL+NLO predictions for physical observables at lepton colliders.
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