Resummed Drell-Yan cross-section at N${}^3$LL

Abstract

We present the resummed predictions for inclusive cross-section for Drell-Yan (DY) production as well as onshell $Z,W^{\pm }$ productions at next-to-next-to-next-to leading logarithmic (N${}^3$LL) accuracy. Using the standard techniques, we derive the $N$-dependent coefficients in the Mellin-$N$ space as well as the $N$-independent constants and match the resummed result through the minimal prescription matching procedure with that of existing next-to next-to leading order (NNLO). In addition to the standard $\ln N$ exponentiation, we study the numerical impacts of exponentiating $N$-independent part of the soft function and the complete ${\bar{g}}_0$ that appears in the resummed predictions in $N$ space. All the analytical pieces needed in these different approaches are extracted from the soft-virtual part of the inclusive cross section known to next-to-next-to-next-to leading order (N${}^3$LO). We perform a detailed analysis on the scale and parton distribution function (PDF) variations and present predictions for the 13 TeV LHC for the neutral Drell-Yan process as well as onshell charged and neutral vector boson productions.

43 pages, 8 figures, 3 tables