PDF fit in the fixed-flavor-number scheme

S. Alekhin; J. Bluemlein; S. Moch

doi:10.1016/j.nuclphysbps.2012.03.006

PDF fit in the fixed-flavor-number scheme

High Energy Physics - Phenomenology 2015-06-04 v1 High Energy Physics - Experiment

Authors: S. Alekhin , J. Bluemlein , S. Moch

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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 $\alpha_s(M_Z)$ .

Keywords

parton distribution functions fixed-flavor-number scheme heavy quarks deep inelastic scattering Drell-Yan process strong coupling constant

Cite

@article{arxiv.1202.4642,
  title  = {PDF fit in the fixed-flavor-number scheme},
  author = {S. Alekhin and J. Bluemlein and S. Moch},
  journal= {arXiv preprint arXiv:1202.4642},
  year   = {2015}
}

Comments

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

PDF fit in the fixed-flavor-number scheme

Abstract

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