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Paper detail

ABM11 PDFs and the cross section benchmarks in NNLO

We report an updated version of the ABKM09 NNLO PDF fit, which includes the most recent HERA collider data on the inclusive cross sections and an improved treatment of the heavy-quark contribution to deep-inelastic scattering using advantages of the running-mass definition for the heavy quarks. The ABM11 PDFs obtained from the updated fit are in a good agreement with the recent LHC data on the W- and Z-production within the experimental and PDF uncertainties. We also perform a determination of the strong coupling constant α_s in a variant of the ABM11 fit insensitive to the influence of the higher twist terms and find the value of α_s=0.1133(11) which is in good agreement with the nominal ABM11 one and our earlier determination.

preprint2013arXivOpen access
S. AlekhinJ. BluemleinS. -O. Moch
hep-ph
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S. AlekhinJ. BluemleinS. -O. Moch

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