NLO PDFs from the ABMP16 fi

Alekhin, S.; Blümlein, J.; Moch, Sven-Olaf

doi:10.1140/epjc/s10052-018-5947-1

Report/Journal Article

PUBDB-2018-02739

NLO PDFs from the ABMP16 fi

Alekhin, S. ; Blümlein, J.DESY* ; Moch, S.-O. (Corresponding author)Extern*

2018
Springer Berlin

The European physical journal / C 78(6), 477 (2018) [10.1140/epjc/s10052-018-5947-1]

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Please use a persistent id in citations: doi:10.1140/epjc/s10052-018-5947-1 doi:10.3204/PUBDB-2018-02739

Report No.: DESY-18-026; DO-TH-17-28; arXiv:1803.07537

Abstract: We perform a global fit of parton distribution functions (PDFs) together with the strong coupling constant $\alpha_s$ and the quark masses $m_c, m_b$ and $m_t$ at next-to-leading order (NLO) in QCD. The analysis applies the $\overline{MS}$ renormalization scheme for αs and all quark masses. It is performed in the fixed-flavor number scheme for $n_f = 3,4,5$ and uses the same data as the previous ABMP16 fit at next-to-next-to-leading order (NNLO). The new NLO PDFs complement the set of ABMP16 PDFs and are to be used consistently with NLO QCD predictions for hard scattering processes. At NLO we obtain the value $\alpha_s^{(n_f=5)}(M_Z) = 0.1191 \pm 0.0011$ compared to $\alpha_s^{(n_f=5)}(M_Z) = 0.1147 \pm 0.0008$ at NNLO.

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