Speaker
Description
Parton distribution functions (PDFs) are a fundamental ingredient in the theoretical description of hard-scattering processes. Over the past decades, the steadily increasing precision of experimental measurements has made it necessary to improve the accuracy of theoretical predictions accordingly. In this context, precise determinations of PDFs have become indispensable.
In this presentation, I will discuss the LuxQED method for computing the polarized photon PDF. This approach allows the photon distribution to be expressed in terms of the polarized structure functions g1 and g2. A central challenge of this method is the need for reliable knowledge of these structure functions over the entire kinematic space. I will review the models and assumptions commonly used to describe g1 and g2 in the different kinematic regions.
Finally, I will discuss mixed-order QCD x QED corrections to PDF evolution, which have a particularly significant impact on the photon PDF.
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