Parton distribution functions and benchmark cross sections at NNLO

Details Parton distribution functions and benchmark cross sections at NNLO Parton distribution functions and benchmark cross sections at NNLO

2012-02-10

arxiv.org/abs/1202.2281v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

65 pages latex, 30 figures

Scientific paper

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.

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