NLO PDFs from the ABMP16 fit

被引:59
作者
Alekhin, S. [1 ,2 ]
Bluemlein, J. [3 ]
Moch, S. [1 ]
机构
[1] Univ Hamburg, Inst Theoret Phys 2, Luruper Chaussee 149, D-22761 Hamburg, Germany
[2] Inst High Energy Phys, Moscow 142281, Russia
[3] Deutsch Elektronensynchrotron DESY, Platanenallee 6, D-15738 Zeuthen, Germany
来源
EUROPEAN PHYSICAL JOURNAL C | 2018年 / 78卷 / 06期
关键词
HIGGS-BOSON PRODUCTION; DENSITY;
D O I
10.1140/epjc/s10052-018-5947-1
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We perform a global fit of parton distribution functions (PDFs) together with the strong coupling constant as and the quark masses m(c), m(b) and m(t) at next-to-leading order (NLO) in QCD. The analysis applies the (MS) over bar renormalization scheme for alpha(s) 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((nf = 5))(s) (M-Z) = 0.1191 +/- 0.0011 compared to a(s)((nf = 5)) (M-Z) = 0.1147 +/- 0.0008 at NNLO.
引用
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页数:8
相关论文
共 23 条
  • [1] A critical appraisal and evaluation of modern PDFs
    Accardi, A.
    Alekhin, S.
    Blumlein, J.
    Garzelli, M. V.
    Lipka, K.
    Melnitchouk, W.
    Moch, S.
    Owens, J. F.
    Placakyte, R.
    Reya, E.
    Sato, N.
    Vogt, A.
    Zenaiev, O.
    [J]. EUROPEAN PHYSICAL JOURNAL C, 2016, 76 (08):
  • [2] Parton distribution functions, αs, and heavy-quark masses for LHC Run II
    Alekhin, S.
    Bluemlein, J.
    Moch, S.
    Placakyte, R.
    [J]. PHYSICAL REVIEW D, 2017, 96 (01)
  • [3] αs from global fits of parton distribution functions
    Alekhin, S.
    Bluemlein, J.
    Moch, S. -O.
    [J]. MODERN PHYSICS LETTERS A, 2016, 31 (25)
  • [4] The ABM parton distributions tuned to LHC data
    Alekhin, S.
    Bluemlein, J.
    Moch, S.
    [J]. PHYSICAL REVIEW D, 2014, 89 (05)
  • [5] Parton distribution functions and benchmark cross sections at next-to-next-to-leading order
    Alekhin, S.
    Bluemlein, J.
    Moch, S.
    [J]. PHYSICAL REVIEW D, 2012, 86 (05):
  • [6] HATHOR - HAdronic Top and Heavy quarks crOss section calculatoR
    Aliev, M.
    Lacker, H.
    Langenfeld, U.
    Moch, S.
    Uwer, P.
    Wiedermann, M.
    [J]. COMPUTER PHYSICS COMMUNICATIONS, 2011, 182 (04) : 1034 - 1046
  • [7] Higgs boson production at hadron colliders in NNLO QCD
    Anastasiou, C
    Melnikov, K
    [J]. NUCLEAR PHYSICS B, 2002, 646 (1-2) : 220 - 256
  • [8] Andreev V, 2017, EUR PHYS J C, V77, DOI 10.1140/epjc/s10052-017-5314-7
  • [9] Percent-Level-Precision Physics at the Tevatron: Next-to-Next-to-Leading Order QCD Corrections to q(q)over-bar → t(t)over-bar+X
    Baernreuther, Peter
    Czakon, Michal
    Mitov, Alexander
    [J]. PHYSICAL REVIEW LETTERS, 2012, 109 (13)
  • [10] Parton distributions from high-precision collider data
    Ball, Richard D.
    Bertone, Valerio
    Carrazza, Stefano
    Del Debbio, Luigi
    Forte, Stefano
    Groth-Merrild, Patrick
    Guffanti, Alberto
    Hartland, Nathan P.
    Kassabov, Zahari
    Latorre, Jose I.
    Nocera, Emanuele R.
    Rojo, Juan
    Rottoli, Luca
    Slade, Emma
    Ubiali, Maria
    [J]. EUROPEAN PHYSICAL JOURNAL C, 2017, 77 (10):