Parton distribution functions and benchmark cross sections at NNLO
High Energy Physics - Phenomenology
2015-06-04 v2
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.
Cite
@article{arxiv.1202.2281,
title = {Parton distribution functions and benchmark cross sections at NNLO},
author = {S. Alekhin and J. Blumlein and S. Moch},
journal= {arXiv preprint arXiv:1202.2281},
year = {2015}
}
Comments
68 pages latex, 32 figures; final version (analysis of LHC jet data added, expanded discussion and additional references)