NLO QCD corrections to Drell-Yan processes in the SANC framework

TL;DR

This paper calculates next-to-leading order QCD corrections to Drell-Yan processes and implements them in the SANC system, comparing different subtraction schemes and validating results against MCFM.

Contribution

It provides a detailed implementation of NLO QCD corrections for Drell-Yan processes within the SANC framework, including quark-gluon channels and singularity subtraction schemes.

Findings

Results agree with MCFM calculations

Comparison of collinear singularity subtraction methods

Implementation covers both charged and neutral current processes

Abstract

NLO QCD corrections to charged and neutral current Drell-Yan processes and their implementation in the computer system SANC are considered. On the partonic level both quark-antiquark and quark-gluon scattering channels are taken into account. Subtractions of the collinear singularities in the massive case are compared with ones in the MS-bar scheme. Results of SANC on the hadronic level are presented. Comparison with results of the MCFM package is shown.