Parton distribution functions and benchmark cross sections at NNLO

TL;DR

This paper determines parton distribution functions and the strong coupling constant at NNLO using world data, providing benchmark cross sections for hadron colliders and comparisons with LHC data.

Contribution

It presents a new NNLO analysis of PDFs and alpha_s, including benchmark cross sections and comparison with collider data.

Findings

Alpha_s(M_Z) = 0.1134 +- 0.0011 at NNLO

Provides NNLO PDFs for deep-inelastic and Drell-Yan data

Benchmark cross sections for LHC and collider experiments

Abstract

We present a determination of parton distribution functions (ABM11) and the strong coupling constant alpha_s at next-to-leading order and next-to-next-to-leading order (NNLO) in QCD based on world data for deep-inelastic scattering and fixed-target data for the Drell-Yan process. The analysis is performed in the fixed-flavor number scheme for n_f=3,4,5 and uses the MSbar-scheme for alpha_s and the heavy-quark masses. At NNLO we obtain the value alpha_s(M_Z) = 0.1134 +- 0.0011. The fit results are used to compute benchmark cross sections at hadron colliders to NNLO accuracy and to compare to data from the LHC.