Parton distributions from high-precision collider data: NNPDF Collaboration
Abstract
We present a new set of parton distributions, NNPDF3.1, which updates NNPDF3.0, the first global set of PDFs determined using a methodology validated by a closure test. The update is motivated by recent progress in methodology and available data, and involves both. On the methodological side, we now parametrize and determine the charm PDF alongside the light-quark and gluon ones, thereby increasing from seven to eight the number of independent PDFs. On the data side, we now include the D0 electron and muon W asymmetries from the final Tevatron dataset, the complete LHCb measurements of W and Z production in the forward region at 7 and 8 TeV, and new ATLAS and CMS measurements of inclusive jet and electroweak boson production. We also include for the first time top-quark pair differential distributions and the transverse momentum of the Z bosons from ATLAS and CMS. We investigate the impact of parametrizing charm and provide evidence that the accuracy and stability of the PDFs are thereby improved. We study the impact of the new data by producing a variety of determinations based on reduced datasets. We find that both improvements have a significant impact on the PDFs, with some substantial reductions inmore »
- Authors:
-
- Univ. of Edinburgh, Scotland (United Kingdom)
- Vrije Univ., Amsterdam (Netherlands)
- European Organization for Nuclear Research (CERN), Geneva (Switzerland)
- Univ. degli Studi di Milano (Italy)
- Univ. of Turin, Torino (Italy)
- Univ.Barcelona (Spain)
- Univ. of Oxford (United Kingdom)
- Univ. of Cambridge (United Kingdom)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
- Sponsoring Org.:
- USDOE
- Contributing Org.:
- NNPDF Collaboration
- OSTI Identifier:
- 1544009
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- European Physical Journal. C, Particles and Fields
- Additional Journal Information:
- Journal Volume: 77; Journal Issue: 10; Journal ID: ISSN 1434-6044
- Publisher:
- Springer
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Physics
Citation Formats
Ball, Richard D., Bertone, Valerio, Carrazza, Stefano, Debbio, Luigi Del, Forte, Stefano, Groth-Merrild, Patrick, Guffanti, Alberto, Hartland, Nathan P., Kassabov, Zahari, Latorre, José I., Nocera, Emanuele R., Rojo, Juan, Rottoli, Luca, Slade, Emma, and Ubiali, Maria. Parton distributions from high-precision collider data: NNPDF Collaboration. United States: N. p., 2017.
Web. doi:10.1140/epjc/s10052-017-5199-5.
Ball, Richard D., Bertone, Valerio, Carrazza, Stefano, Debbio, Luigi Del, Forte, Stefano, Groth-Merrild, Patrick, Guffanti, Alberto, Hartland, Nathan P., Kassabov, Zahari, Latorre, José I., Nocera, Emanuele R., Rojo, Juan, Rottoli, Luca, Slade, Emma, & Ubiali, Maria. Parton distributions from high-precision collider data: NNPDF Collaboration. United States. https://doi.org/10.1140/epjc/s10052-017-5199-5
Ball, Richard D., Bertone, Valerio, Carrazza, Stefano, Debbio, Luigi Del, Forte, Stefano, Groth-Merrild, Patrick, Guffanti, Alberto, Hartland, Nathan P., Kassabov, Zahari, Latorre, José I., Nocera, Emanuele R., Rojo, Juan, Rottoli, Luca, Slade, Emma, and Ubiali, Maria. 2017.
"Parton distributions from high-precision collider data: NNPDF Collaboration". United States. https://doi.org/10.1140/epjc/s10052-017-5199-5. https://www.osti.gov/servlets/purl/1544009.
@article{osti_1544009,
title = {Parton distributions from high-precision collider data: NNPDF Collaboration},
author = {Ball, Richard D. and Bertone, Valerio and Carrazza, Stefano and Debbio, Luigi Del and Forte, Stefano and Groth-Merrild, Patrick and Guffanti, Alberto and Hartland, Nathan P. and Kassabov, Zahari and Latorre, José I. and Nocera, Emanuele R. and Rojo, Juan and Rottoli, Luca and Slade, Emma and Ubiali, Maria},
abstractNote = {We present a new set of parton distributions, NNPDF3.1, which updates NNPDF3.0, the first global set of PDFs determined using a methodology validated by a closure test. The update is motivated by recent progress in methodology and available data, and involves both. On the methodological side, we now parametrize and determine the charm PDF alongside the light-quark and gluon ones, thereby increasing from seven to eight the number of independent PDFs. On the data side, we now include the D0 electron and muon W asymmetries from the final Tevatron dataset, the complete LHCb measurements of W and Z production in the forward region at 7 and 8 TeV, and new ATLAS and CMS measurements of inclusive jet and electroweak boson production. We also include for the first time top-quark pair differential distributions and the transverse momentum of the Z bosons from ATLAS and CMS. We investigate the impact of parametrizing charm and provide evidence that the accuracy and stability of the PDFs are thereby improved. We study the impact of the new data by producing a variety of determinations based on reduced datasets. We find that both improvements have a significant impact on the PDFs, with some substantial reductions in uncertainties, but with the new PDFs generally in agreement with the previous set at the one-sigma level. The most significant changes are seen in the light-quark flavor separation, and in increased precision in the determination of the gluon. We explore the implications of NNPDF3.1 for LHC phenomenology at Run II, compare with recent LHC measurements at 13 TeV, provide updated predictions for Higgs production cross-sections and discuss the strangeness and charm content of the proton in light of our improved dataset and methodology. The NNPDF3.1 PDFs are delivered for the first time both as Hessian sets, and as optimized Monte Carlo sets with a compressed number of replicas.},
doi = {10.1140/epjc/s10052-017-5199-5},
url = {https://www.osti.gov/biblio/1544009},
journal = {European Physical Journal. C, Particles and Fields},
issn = {1434-6044},
number = 10,
volume = 77,
place = {United States},
year = {Wed Oct 04 00:00:00 EDT 2017},
month = {Wed Oct 04 00:00:00 EDT 2017}
}
Web of Science
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A multi-dimensional search for new heavy resonances decaying to boosted $$\text{ W }{}{}$$W $$\text{ W }{}{}$$W , $$\text{ W }{}{}$$W $$\text{ Z }{}{}$$Z , or $$\text{ Z }{}{}$$Z $$\text{ Z }{}{}$$Z boson pairs in the dijet final state at 13 $$\text {Te}\text {V}$$Te
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On the model dependence of fiducial cross-section measurements
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A Guide to Light-Cone PDFs from Lattice QCD: An Overview of Approaches, Techniques, and Results
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Measurement of ${{\mathrm{D}}^0}$ , ${{\mathrm{D}}^+}$ , ${{\mathrm{D}}^{*+}}$ and ${{\mathrm{D}}^+_{\mathrm{s}}}$ production in pp collisions at ${\sqrt{{\textit{s}}}~=~5.02~{\text {TeV}}}$ with ALICE
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Evidence for $\text {W}\text {W}$ production from double-parton interactions in proton-proton collisions at $\sqrt{s} = 13 \,\text {TeV}
text, January 2019
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Observation of light-by-light scattering in ultraperipheral Pb+Pb collisions with the ATLAS detector
text, January 2019
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- Deutsches Elektronen-Synchrotron, DESY, Hamburg
Accessing Gluon Parton Distributions in Large Momentum Effective Theory
text, January 2019
- Zhang, Jian-Hui; Ji, Xiangdong; Schäfer, Andreas
- Universität Regensburg
Determination of the strong coupling constant using inclusive jet cross section data from multiple experiments
text, January 2019
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Search for production of four top quarks in final states with same-sign or multiple leptons in proton–proton collisions at $\sqrt{s}=13$$\,\text {TeV}$
text, January 2020
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Pion valence structure from Ioffe-time parton pseudodistribution functions
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Evidence for $$\text {W}\text {W}$$WW production from double-parton interactions in proton–proton collisions at $$\sqrt{s} = 13 \,\text {TeV} $$s=13TeV
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Soft-gluon corrections in top-quark production
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Nonperturbative Uncertainties on the Transverse Momentum Distribution of Electroweak Bosons and on the Determination of the Boson Mass at the LHC
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Computation of parton distributions from the quasi-PDF approach at the physical point
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Subleading Power Rapidity Divergences and Power Corrections for $q_T$
text, January 2019
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- Deutsches Elektronen-Synchrotron, DESY, Hamburg
Moments of nucleon generalized parton distributions from lattice QCD simulations at physical pion mass
text, January 2020
- Alexandrou, C.; Bacchio, S.; Constantinou, M.
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Performance of the reconstruction and identification of high-momentum muons in proton-proton collisions at √s = 13 TeV
text, January 2020
- Collaboration, Cms; Sirunyan, Albert M.; Backhaus, Malte
- ETH Zurich
Unpolarized isovector quark distribution function from lattice QCD: A systematic analysis of renormalization and matching
text, January 2020
- Liu, Yu-Sheng; Chen, Jiunn-Wei; Huo, Yi-Kai
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Systematic uncertainties in parton distribution functions from lattice QCD simulations at the physical point
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Search for a W' boson decaying to a vector-like quark and a top or bottom quark in the all-jets final state
text, January 2018
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Subleading Power Rapidity Divergences and Power Corrections for $q_T$
text, January 2018
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- Deutsches Elektronen-Synchrotron, DESY, Hamburg
Impact of low-$x$ resummation on QCD analysis of HERA data
text, January 2018
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- Deutsches Elektronen-Synchrotron, DESY, Hamburg
Performance of the reconstruction and identification of high-momentum muons in proton-proton collisions at $\sqrt{s} =$ 13 TeV
text, January 2020
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- Deutsches Elektronen-Synchrotron, DESY, Hamburg
Observation of Higgs Boson Decay to Bottom Quarks
text, January 2018
- Collaboration, Cms; Sirunyan, Albert M.; Backhaus, Malte
- ETH Zurich
Higher Order Corrections to Spin Correlations in Top Quark Pair Production at the LHC
text, January 2019
- Behring, Arnd; Czakon, Michał; Mitov, Alexander
- Karlsruhe
Search for a W′ boson decaying to a vector-like quark and a top or bottom quark in the all-jets final state
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Nuclear structure functions at a future electron-ion collider
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Measurement of $${{\mathrm{D}}^0}$$, $${{\mathrm{D}}^+}$$, $${{\mathrm{D}}^{*+}}$$ and $${{\mathrm{D}}^+_{\mathrm{s}}}$$ production in pp collisions at $${\sqrt{{\textit{s}}}~=~5.02~{\text {TeV}}}$$ with ALICE
journal, May 2019
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Measurement of the $t\bar{t}$ production cross-section and lepton differential distributions in $e\mu$ dilepton events from $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
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Next-to-Next-to-Leading-Order QCD Corrections to the Transverse Momentum Distribution of Weak Gauge Bosons
text, January 2018
- Aude, Gehrmann-De Ridder,; Thomas, Gehrmann,; Nigel, Glover, E. W.
- ETH Zurich
Computation of parton distributions from the quasi-PDF approach at the physical point
text, January 2017
- Alexandrou, Constantia; Bacchio, Simone; Cichy, Krzysztof
- arXiv
Analytical approaches to the determination of spin-dependent parton distribution functions at NNLO approximation
text, January 2018
- Salajegheh, Maral; Nejad, S. Mohammad Moosavi; Khanpour, Hamzeh
- arXiv
Forces inside hadrons: pressure, surface tension, mechanical radius, and all that
text, January 2018
- Polyakov, Maxim V.; Schweitzer, Peter
- arXiv
Unpolarized isovector quark distribution function from Lattice QCD: A systematic analysis of renormalization and matching
text, January 2018
- Liu, Yu-Sheng; Chen, Jiunn-Wei; Huo, Yi-Kai
- arXiv
Nucleon parton distributions from hadronic quantum fluctuations
text, January 2018
- Ekstedt, Andreas; Ghaderi, Hazhar; Ingelman, Gunnar
- arXiv
A guide to light-cone PDFs from Lattice QCD: an overview of approaches, techniques and results
text, January 2018
- Cichy, Krzysztof; Constantinou, Martha
- arXiv
Phenomenology of diffractive DIS in the framework of fracture functions and determination of diffractive parton distribution functions
text, January 2019
- Khanpour, Hamzeh
- arXiv
Can New Physics hide inside the proton?
text, January 2019
- Carrazza, Stefano; Degrande, Celine; Iranipour, Shayan
- arXiv
Ambiguities of the principle of maximum conformality procedure for hadron collider processes
text, January 2019
- Chawdhry, Herschel A.; Mitov, Alexander
- arXiv
Complete matching for quasidistribution functions in large momentum effective theory
text, January 2019
- Wang, Wei; Zhang, Jian-Hui; Zhao, Shuai
- Universität Regensburg
Matching generalized parton quasidistributions in the RI/MOM scheme
text, January 2019
- Liu, Yu-Sheng; Wang, Wei; Xu, Ji
- Universität Regensburg
Factorization of Jet Cross Sections in Heavy-Ion Collisions
text, January 2019
- Qiu, Jian-Wei; Ringer, Felix; Sato, Nobuo
- Universität Regensburg
Impact of low-$x$ resummation on QCD analysis of HERA data
text, January 2018
- Abdolmaleki, Hamed; Bertone, Valerio; Britzger, Daniel
- Deutsches Elektronen-Synchrotron, DESY, Hamburg