Approximate N${}^3$LO Parton Distribution Functions with Theoretical Uncertainties: MSHT20aN${}^3$LO PDFs

J. McGowan, T. Cridge, L. A. Harland-Lang +1

We present the first global analysis of parton distribution functions (PDFs) at approximate N${}^3$LO in the strong coupling constant ${\alpha }_s$, extending beyond the current highest…