1202.2281 (S. Alekhin et al.)

Parton distribution functions and benchmark cross sections at NNLO    [PDF]

S. Alekhin, J. Blumlein, S. Moch

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.

View original: http://arxiv.org/abs/1202.2281