PDF fit in the fixed-flavor-number scheme

Abstract

We discuss the heavy-quark contribution to deep inelastic scattering in the scheme with $n_f=3,4,5$ fixed flavors. Based on the recent ABM11 PDF analysis of world data for deep-inelastic scattering and fixed-target data for the Drell-Yan process with the running-mass definition for heavy quarks we show that fixed flavor number scheme is sufficient for describing the deep-inelastic-scattering data in the entire kinematic range. We compare with other PDF sets and comment on the implications for measuring the strong coupling constant ${\alpha }_s(M_Z)$.

11 pages with 10 figures, to appear in the proceedings of the "Ringberg Workshop: New Trends in HERA Physics 2011", Ringberg Castle, Germany, 25-28 September, 2011

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Cited by in corpus (4)

• Measurement of the muon charge asymmetry in inclusive pp to WX production at sqrt(s) = 7 TeV and an improved determination of light parton distribution functions
• Global analysis of nuclear parton distribution functions and their uncertainties at next-to-next-to-leading order
• On the next-to-next-to-leading order QCD corrections to heavy-quark production in deep-inelastic scattering
• New parton distributions in fixed flavour factorization scheme from recent deep-inelastic-scattering data