Determination of the strong coupling constant αS(mZ) from measurements of inclusive W± and Z boson production cross sections in proton-proton collisions at s\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \sqrt{\mathrm{s}} $$\end{document} = 7 and 8 TeV

被引：0

作者：

A. M. Sirunyan ^{[88
]}

A. Tumasyan ^{[267
]}

W. Adam ^{[1
]}

F. Ambrogi ^{[1
]}

T. Bergauer ^{[2
]}

M. Dragicevic ^{[2
]}

J. Erö ^{[2
]}

A. Escalante Del Valle ^{[2
]}

M. Flechl ^{[2
]}

R. Frühwirth ^{[2
]}

M. Jeitler ^{[2
]}

N. Krammer ^{[2
]}

I. Krätschmer ^{[214
]}

D. Liko ^{[2
]}

T. Madlener ^{[214
]}

I. Mikulec ^{[2
]}

N. Rad ^{[2
]}

J. Schieck ^{[2
]}

R. Schöfbeck ^{[2
]}

M. Spanring ^{[2
]}

W. Waltenberger ^{[2
]}

C.-E. Wulz ^{[2
]}

M. Zarucki ^{[214
]}

V. Drugakov ^{[2
]}

V. Mossolov ^{[2
]}

J. Suarez Gonzalez ^{[2
]}

M. R. Darwish ^{[2
]}

E. A. De Wolf ^{[214
]}

D. Di Croce ^{[2
]}

X. Janssen ^{[3
]}

A. Lelek ^{[3
]}

M. Pieters ^{[3
]}

H. Rejeb Sfar ^{[4
]}

H. Van Haevermaet ^{[4
]}

P. Van Mechelen ^{[4
]}

S. Van Putte ^{[4
]}

N. Van Remortel ^{[4
]}

F. Blekman ^{[4
]}

E. S. Bols ^{[4
]}

S. S. Chhibra ^{[4
]}

J. D’Hondt ^{[4
]}

J. De Clercq ^{[4
]}

D. Lontkovskyi ^{[4
]}

S. Lowette ^{[5
]}

I. Marchesini ^{[5
]}

S. Moortgat ^{[5
]}

Q. Python ^{[5
]}

S. Tavernier ^{[5
]}

W. Van Doninck ^{[5
]}

P. Van Mulders ^{[5
]}

机构：

[1] Yerevan Physics Institute,Institute for Nuclear Research and Nuclear Energy

[2] Institut für Hochenergiephysik,Department of Physics

[3] Institute for Nuclear Problems,State Key Laboratory of Nuclear Physics and Technology

[4] Universiteit Antwerpen,Department of Physics

[5] Vrije Universiteit Brussel,MTA

[6] Université Libre de Bruxelles,ELTE Lendület CMS Particle and Nuclear Physics Group

[7] Ghent University,Institute of Physics

[8] Université Catholique de Louvain,National Centre for Particle Physics

[9] Centro Brasileiro de Pesquisas Fisicas,National Centre for Physics

[10] Universidade do Estado do Rio de Janeiro,Institute of Experimental Physics, Faculty of Physics

[11] Universidade Estadual Paulista,Skobeltsyn Institute of Nuclear Physics

[12] Universidade Federal do ABC,Faculty of Physics

[13] Bulgarian Academy of Sciences,School of Physics and Astronomy

[14] University of Sofia,undefined

[15] Beihang University,undefined

[16] Tsinghua University,undefined

[17] Institute of High Energy Physics,undefined

[18] Peking University,undefined

[19] Zhejiang University,undefined

[20] Universidad de Los Andes,undefined

[21] Universidad de Antioquia,undefined

[22] University of Split,undefined

[23] Faculty of Electrical Engineering,undefined

[24] Mechanical Engineering and Naval Architecture,undefined

[25] University of Split,undefined

[26] Faculty of Science,undefined

[27] Institute Rudjer Boskovic,undefined

[28] University of Cyprus,undefined

[29] Charles University,undefined

[30] Escuela Politecnica Nacional,undefined

[31] Universidad San Francisco de Quito,undefined

[32] Academy of Scientific Research and Technology of the Arab Republic of Egypt,undefined

[33] Egyptian Network of High Energy Physics,undefined

[34] National Institute of Chemical Physics and Biophysics,undefined

[35] University of Helsinki,undefined

[36] Helsinki Institute of Physics,undefined

[37] Lappeenranta University of Technology,undefined

[38] IRFU,undefined

[39] CEA,undefined

[40] Université Paris-Saclay,undefined

[41] Laboratoire Leprince-Ringuet,undefined

[42] CNRS/IN2P3,undefined

[43] Ecole Polytechnique,undefined

[44] Institut Polytechnique de Paris,undefined

[45] Université de Strasbourg,undefined

[46] CNRS,undefined

[47] IPHC UMR 7178,undefined

[48] Centre de Calcul de l’Institut National de Physique Nucleaire et de Physique des Particules,undefined

[49] CNRS/IN2P3,undefined

[50] Université de Lyon,undefined

来源：

Journal of High Energy Physics | / 2020卷 / 6期

关键词：

Hadron-Hadron scattering (experiments); Particle and resonance production;

D O I：

10.1007/JHEP06(2020)018

中图分类号：

学科分类号：

摘要：

Twelve measurements of inclusive cross sections of W± and Z boson production, performed in proton-proton collisions at centre-of-mass energies of 7 and 8 TeV, are compared with perturbative quantum chromodynamics calculations at next-to-next- to-leading order (NNLO) accuracy obtained with the CT14, HERAPDF2.0, MMHT14, and NNPDF3.0 parton distribution functions (PDFs). Data and theory agree well for all PDF sets, taking into account the experimental and theoretical uncertainties. A novel procedure is employed to extract the strong coupling constant at the Z pole mass from a detailed comparison of all the experimental fiducial cross sections to the corresponding NNLO theoretical predictions, yielding αSmZ=0.1163−0.0031+0.0024\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ {\alpha}_{\mathrm{S}}\left({m}_{\mathrm{Z}}\right)={0.1163}_{-0.0031}^{+0.0024} $$\end{document} (CT14), 0.1072−0.0040+0.0043\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ {0.1072}_{-0.0040}^{+0.0043} $$\end{document} (HERAPDF2.0), 0.1186 ± 0.0025 (MMHT14), and 0.1147 ± 0.0023 (NNPDF3.0). Using the results obtained with the CT14 and MMHT14 PDFs, which yield the most robust and stable αS(mZ) extractions, a value αSmZ=0.1175−0.0028+0.0025\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ {\alpha}_{\mathrm{S}}\left({m}_{\mathrm{Z}}\right)={0.1175}_{-0.0028}^{+0.0025} $$\end{document} is determined.

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