Abstract
The inclusive cross sections of W+, W−, and Z boson production from 34 different measurements performed in proton-(anti)proton collisions at center-of-mass energies \( \sqrt{s} \) = 1.8–13 TeV, are compared to perturbative QCD calculations at next-to-next-to-leading-order (NNLO) accuracy with four sets of parton distributions functions (CT14, HERAPDF2.0, MMHT14, and NNPDF3.0 PDFs) and varying values of the strong coupling constant at the Z mass pole, αs(mZ). The data-theory agreement is good within the experimental and theoretical uncertainties, with the CT14 and MMHT14 parton densities providing the most overall consistent description of all cross section data. A value of αs(mZ) = \( {0.1188}_{-0.0013}^{+0.0019} \) is extracted from a combined fit of the 28 experimental LHC measurements to the corresponding NNLO theoretical predictions obtained with the MMHT14 PDF set, which provides the most robust and stable QCD coupling extraction of this analysis.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
References
S. Alioli et al., Precision studies of observables in pp → W → lνl and pp → γ, Z → l+l− processes at the LHC, Eur. Phys. J. C 77 (2017) 280 [arXiv:1606.02330] [INSPIRE].
CDF collaboration, Measurement of σ · B(W → eν) and σ · B(Z0 → e+e−) in \( p\overline{p} \)Collisions at \( \sqrt{s} \) = 1.8 TeV, Phys. Rev. Lett. 76 (1996) 3070 [hep-ex/9509010] [INSPIRE].
D0 collaboration, Extraction of the width of the W boson from measurements of σ(\( p\overline{p} \)→ W + X) × B(W → eν) and σ(\( p\overline{p} \)→ Z + X ) × B(Z → ee) and their ratio, Phys. Rev. D 61 (2000) 072001 [hep-ex/9906025] [INSPIRE].
CDF collaboration, Measurements of inclusive W and Z cross sections in \( p\overline{p} \)collisions at \( \sqrt{s} \) = 1.96 TeV, J. Phys. G 34 (2007) 2457 [hep-ex/0508029] [INSPIRE].
CMS collaboration, Measurement of the Inclusive W and Z Production Cross Sections in pp Collisions at \( \sqrt{s} \) = 7 TeV, JHEP 10 (2011) 132 [arXiv:1107.4789] [INSPIRE].
CMS collaboration, Measurement of inclusive W and Z boson production cross sections in pp collisions at \( \sqrt{s} \) = 8 TeV, Phys. Rev. Lett. 112 (2014) 191802 [arXiv:1402.0923] [INSPIRE].
ATLAS collaboration, Measurement of the inclusive W± and Z/γ* cross sections in the e and μ decay channels in pp collisions at \( \sqrt{s} \) = 7 TeV with the ATLAS detector, Phys. Rev. D 85 (2012) 072004 [arXiv:1109.5141] [INSPIRE].
ATLAS collaboration, Measurement of the transverse momentum and \( {\phi}_{\eta}^{\ast } \)distributions of Drell-Yan lepton pairs in proton-proton collisions at \( \sqrt{s} \) = 8 TeV with the ATLAS detector, Eur. Phys. J. C 76 (2016) 291 [arXiv:1512.02192] [INSPIRE].
ATLAS collaboration, Measurement of W± and Z -boson production cross sections in pp collisions at \( \sqrt{s} \) = 13 TeV with the ATLAS detector, Phys. Lett. B 759 (2016) 601 [arXiv:1603.09222] [INSPIRE].
LHCb collaboration, Measurement of the forward Z boson production cross-section in pp collisions at \( \sqrt{s} \) = 7 TeV, JHEP 08 (2015) 039 [arXiv:1505.07024] [INSPIRE].
LHCb collaboration, Measurement of forward W and Z boson production in pp collisions at \( \sqrt{s} \) = 8 TeV, JHEP 01 (2016) 155 [arXiv:1511.08039] [INSPIRE].
LHCb collaboration, Measurement of the forward Z boson production cross-section in pp collisions at \( \sqrt{s} \) = 13 TeV, JHEP 09 (2016) 136 [arXiv:1607.06495] [INSPIRE].
LHCb collaboration, Measurement of forward W → eν production in pp collisions at \( \sqrt{s} \) = 8 TeV, JHEP 10 (2016) 030 [arXiv:1608.01484] [INSPIRE].
C. Anastasiou, L.J. Dixon, K. Melnikov and F. Petriello, High precision QCD at hadron colliders: Electroweak gauge boson rapidity distributions at NNLO, Phys. Rev. D 69 (2004) 094008 [hep-ph/0312266] [INSPIRE].
S. Catani, L. Cieri, G. Ferrera, D. de Florian and M. Grazzini, Vector boson production at hadron colliders: a fully exclusive QCD calculation at NNLO, Phys. Rev. Lett. 103 (2009) 082001 [arXiv:0903.2120] [INSPIRE].
R. Gavin, Y. Li, F. Petriello and S. Quackenbush, FEWZ 2.0: A code for hadronic Z production at next-to-next-to-leading order, Comput. Phys. Commun. 182 (2011) 2388 [arXiv:1011.3540] [INSPIRE].
J.M. Campbell and R.K. Ellis, MCFM for the Tevatron and the LHC, Nucl. Phys. Proc. Suppl. 205–206 (2010) 10 [arXiv:1007.3492] [INSPIRE].
R. Boughezal et al., Color singlet production at NNLO in MCFM, Eur. Phys. J. C 77 (2017) 7 [arXiv:1605.08011] [INSPIRE].
Y. Li and F. Petriello, Combining QCD and electroweak corrections to dilepton production in FEWZ, Phys. Rev. D 86 (2012) 094034 [arXiv:1208.5967] [INSPIRE].
S.G. Bondarenko and A.A. Sapronov, NLO EW and QCD proton-proton cross section calculations with mcsanc-v1.01, Comput. Phys. Commun. 184 (2013) 2343 [arXiv:1301.3687] [INSPIRE].
A. Poldaru, D. d’Enterria and X. Weichen, αS extraction from inclusive W± and Z cross sections in proton-proton collisions at the LHC, PoS(ALPHAS2019)013 (2019) [INSPIRE].
S. Dulat et al., New parton distribution functions from a global analysis of quantum chromodynamics, Phys. Rev. D 93 (2016) 033006 [arXiv:1506.07443] [INSPIRE].
H1 and ZEUS collaborations, Combination of measurements of inclusive deep inelastic e±p scattering cross sections and QCD analysis of HERA data, Eur. Phys. J. C 75 (2015) 580 [arXiv:1506.06042] [INSPIRE].
L.A. Harland-Lang, A.D. Martin, P. Motylinski and R.S. Thorne, Parton distributions in the LHC era: MMHT 2014 PDFs, Eur. Phys. J. C 75 (2015) 204 [arXiv:1412.3989] [INSPIRE].
NNPDF collaboration, Parton distributions for the LHC Run II, JHEP 04 (2015) 040 [arXiv:1410.8849] [INSPIRE].
S. Alekhin, J. Blumlein and S. Moch, Parton Distribution Functions and Benchmark Cross Sections at NNLO, Phys. Rev. D 86 (2012) 054009 [arXiv:1202.2281] [INSPIRE].
P. Jimenez-Delgado and E. Reya, Variable Flavor Number Parton Distributions and Weak Gauge and Higgs Boson Production at Hadron Colliders at NNLO of QCD, Phys. Rev. D 80 (2009) 114011 [arXiv:0909.1711] [INSPIRE].
CMS collaboration, Determination of the strong coupling constant αS(mZ) from measurements of inclusive W± and Z boson production cross sections in proton-proton collisions at \( \sqrt{s} \) = 7 and 8 TeV, arXiv:1912.04387 [INSPIRE].
T. Klijnsma, S. Bethke, G. Dissertori and G.P. Salam, Determination of the strong coupling constant αs(mZ) from measurements of the total cross section for top-antitop quark production, Eur. Phys. J. C 77 (2017) 778 [arXiv:1708.07495] [INSPIRE].
Particle Data Group, Review of Particle Physics, Phys. Rev. D 98 (2018) 030001 [INSPIRE].
S. Alekhin et al., Proceedings of the High-Precision αs Measurements from LHC to FCC-ee, Geneva, Switzerland, 2–13 October 2015, D. d’Enterria and P.Z. Skands eds., CERN, Geneva Switzerland (2015), CERN-PH-TH-2015-299 [arXiv:1512.05194] [INSPIRE].
D. d’Enterria, S. Kluth eds. et al., proceedings of αs (2019): Precision measurements of the QCD coupling, 11–15 February 2019, Trento, Italy, PoS ALPHAS (2019) [arXiv:1907.01435] [INSPIRE].
ATLAS collaboration, Measurements of W and Z boson production in pp collisions at \( \sqrt{s} \) = 5.02 TeV with the ATLAS detector, Eur. Phys. J. C 79 (2019) 128 [Erratum ibid. C 79 (2019) 374] [arXiv:1810.08424] [INSPIRE].
ATLAS collaboration, Measurement of the cross-section and charge asymmetry of W bosons produced in proton-proton collisions at \( \sqrt{s} \) = 8 TeV with the ATLAS detector, Eur. Phys. J. C 79 (2019) 760 [arXiv:1904.05631] [INSPIRE].
ATLAS collaboration, Measurement of W±-boson and Z-boson production cross-sections in pp collisions at \( \sqrt{s} \) = 2.76 TeV with the ATLAS detector, Eur. Phys. J. C 79 (2019) 901 [arXiv:1907.03567] [INSPIRE].
CMS collaboration, Measurements of differential Z boson production cross sections in proton-proton collisions at \( \sqrt{s} \) = 13 TeV, JHEP 12 (2019) 061 [arXiv:1909.04133] [INSPIRE].
J.C. Collins, D.E. Soper and G.F. Sterman, Factorization for Short Distance Hadron-Hadron Scattering, Nucl. Phys. B 261 (1985) 104 [INSPIRE].
A. Buckley et al., LHAPDF6: parton density access in the LHC precision era, Eur. Phys. J. C 75 (2015) 132 [arXiv:1412.7420] [INSPIRE].
NNPDF collaboration, Illuminating the photon content of the proton within a global PDF analysis, SciPost Phys. 5 (2018) 008 [arXiv:1712.07053] [INSPIRE].
D. de Florian, M. Der and I. Fabre, QCD ⊕ QED NNLO corrections to Drell-Yan production, Phys. Rev. D 98 (2018) 094008 [arXiv:1805.12214] [INSPIRE].
J. Kieseler, A method and tool for combining differential or inclusive measurements obtained with simultaneously constrained uncertainties, Eur. Phys. J. C 77 (2017) 792 [arXiv:1706.01681] [INSPIRE].
R. Nisius, On the combination of correlated estimates of a physics observable, Eur. Phys. J. C 74 (2014) 3004 [arXiv:1402.4016] [INSPIRE].
D. Neudecker et al., Preliminary Evaluation and Uncertainty Quantification of the Prompt Fission Neutron Spectrum of 239Pu, Nucl. Data Sheets 123 (2015) 146 [INSPIRE].
NNPDF collaboration, Parton distributions from high-precision collider data, Eur. Phys. J. C 77 (2017) 663 [arXiv:1706.00428] [INSPIRE].
S. Carrazza, A. Ferrara, D. Palazzo and J. Rojo, APFEL Web, J. Phys. G 42 (2015) 057001 [arXiv:1410.5456] [INSPIRE].
J. Haller, A. Hoecker, R. Kogler, K. Mönig, T. Peiffer and J. Stelzer, Update of the global electroweak fit and constraints on two-Higgs-doublet models, Eur. Phys. J. C 78 (2018) 675 [arXiv:1803.01853] [INSPIRE].
CMS collaboration, Measurement of the \( t\overline{t} \)production cross section, the top quark mass and the strong coupling constant using dilepton events in pp collisions at \( \sqrt{s} \) = 13 TeV, Eur. Phys. J. C 79 (2019) 368 [arXiv:1812.10505] [INSPIRE].
D. Boito, M. Golterman, K. Maltman, J. Osborne and S. Peris, Strong coupling from the revised ALEPH data for hadronic τ decays, Phys. Rev. D 91 (2015) 034003 [arXiv:1410.3528] [INSPIRE].
A. Pich and A. Rodríguez-Sánchez, Updated determination of \( {\alpha}_s\left({m}_{\tau}^2\right) \)from tau decays, Mod. Phys. Lett. A 31 (2016) 1630032 [arXiv:1606.07764] [INSPIRE].
J. Butterworth et al., PDF4LHC recommendations for LHC Run II, J. Phys. G 43 (2016) 023001 [arXiv:1510.03865] [INSPIRE].
Open Access
This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited
Author information
Authors and Affiliations
Corresponding author
Additional information
Publisher’s Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
ArXiv ePrint: 1912.11733
Rights and permissions
This article is published under an open access license. Please check the 'Copyright Information' section either on this page or in the PDF for details of this license and what re-use is permitted. If your intended use exceeds what is permitted by the license or if you are unable to locate the licence and re-use information, please contact the Rights and Permissions team.
About this article
Cite this article
d’Enterria, D., Poldaru, A. Extraction of the strong coupling αs(mZ) from a combined NNLO analysis of inclusive electroweak boson cross sections at hadron colliders. J. High Energ. Phys. 2020, 16 (2020). https://doi.org/10.1007/JHEP06(2020)016
Received:
Revised:
Accepted:
Published:
DOI: https://doi.org/10.1007/JHEP06(2020)016