Impact of Lattice Strangeness Asymmetry Data in the CTEQ-TEA Global Analysis

Abstract

We study the impact of lattice data on the determination of the strangeness asymmetry distribution $s_{-}(x)\equiv s(x)-\bar{s}(x)$ in the general CTEQ-TEA global analysis of parton distribution functions (PDFs) of the proton. Firstly, we find that allowing a nonvanishing $s_{-}(x)$, at the initial $Q_0=1.3$~GeV scale, in a global PDF analysis leads to a CT18As fit with similar quality to CT18A. Secondly, including the lattice data in the CT18As\_Lat fit greatly reduces the $s_{-}$-PDF error band size in the large-$x$ region. To further reduce its error would require more precise lattice data, extended to smaller $x$ values. We take ATLAS 7 TeV $W$ and $Z$ production data, SIDIS di-muon production data, $F_3$ structure function data, E866 NuSea data, and E906 SeaQuest data as examples to illustrate the implication of CT18As and CT18As\_Lat fits. The parametrization dependence for PDF ratio $(s+\bar{s})/(\bar{u}+\bar{d})(x)$ is analyzed with CT18As2 and CT18As2\_Lat fits as results.

arXiv comment37 pages, 19 figures. arXiv admin note: text overlap with arXiv:2204.07944

References in corpus (58)

• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• New parton distributions for collider physics
• LHAPDF6: parton density access in the LHC precision era
• New parton distribution functions from a global analysis of quantum chromodynamics
• Implications of CTEQ global analysis for collider observables
• The Three-Loop Splitting Functions in QCD: The Non-Singlet Case
• The Chroma Software System for Lattice QCD
• Parton Physics on Euclidean Lattice
• New CTEQ global analysis of quantum chromodynamics with high-precision data from the LHC
• Parton distributions from LHC, HERA, Tevatron and fixed target data: MSHT20 PDFs
• The Path to Proton Structure at One-Percent Accuracy
• Improved Measurement of the $\bar{d}/\bar{u}$ Asymmetry in the Nucleon Sea
• Lattice QCD ensembles with four flavors of highly improved staggered quarks
• Uncertainties of Predictions from Parton Distribution Functions I: the Lagrange Multiplier Method
• Precise Measurement of Dimuon Production Cross-Sections in muon neutrino Fe and muon antineutrino Fe Deep Inelastic Scattering at the Tevatron
• Parton distributions and lattice QCD calculations: a community white paper
• Large-Momentum Effective Theory
• Nucleon Helicity and Transversity Parton Distributions from Lattice QCD
• An Improved Determination of ${\alpha }_S$ From Neutrino-Nucleon Scattering
• Flavor Structure of the Nucleon Sea from Lattice QCD
• Precision measurement and interpretation of inclusive $W^{+}$, $W^{-}$ and $Z/{\gamma }^{\ast }$ production cross sections with the ATLAS detector
• A Lattice Calculation of Parton Distributions
• Scaling studies of QCD with the dynamical HISQ action
• Parton distributions and lattice QCD calculations: toward 3D structure
• Proton Mass Decomposition from the QCD Energy Momentum Tensor
• Parton Distribution Function with Non-perturbative Renormalization from Lattice QCD
• Complete flavor decomposition of the spin and momentum fraction of the proton using lattice QCD simulations at physical pion mass
• Measurement of the muon charge asymmetry in inclusive pp to WX production at sqrt(s) = 7 TeV and an improved determination of light parton distribution functions
• Measurement of the forward $Z$ boson production cross-section in $pp$ collisions at $\sqrt{s}$ = 7 TeV
• Measurement of forward $W$ and $Z$ boson production in $pp$ collisions at $\sqrt{s}=8\mathrm{Te}\mathrm{V}$
• First direct lattice-QCD calculation of the $x$-dependence of the pion parton distribution function
• Measurement of the production of a W boson in association with a charm quark in pp collisions at sqrt(s)=7 TeV with the ATLAS detector
• Matching the Quasi Parton Distribution in a Momentum Subtraction Scheme
• Measurement of associated W + charm production in pp collisions at sqrt(s) = 7 TeV
• Proton Isovector Helicity Distribution on the Lattice at Physical Pion Mass
• Measurement of the differential cross section and charge asymmetry for inclusive pp to W + X production at sqrt(s) = 8 TeV
• A Hybrid Renormalization Scheme for Quasi Light-Front Correlations in Large-Momentum Effective Theory
• Measurement of the electron charge asymmetry in inclusive W production in pp collisions at sqrt(s) = 7 TeV
• Perturbative generation of a strange-quark asymmetry in the nucleon
• Pion generalized parton distribution from lattice QCD
• The Asymmetry of Antimatter in the Proton
• The Strange Parton Distribution of the Nucleon: Global Analysis and Applications
• Improved Parton Distribution Functions at Physical Pion Mass
• Measurement of the muon charge asymmetry from W boson decays
• Measurement of the electron charge asymmetry in $\mathbf{p}\bar{\mathbf{p}}\to \mathbf{W}+\mathbf{X}\to \mathbf{e\nu }+\mathbf{X}$ decays in $\mathbf{p}\bar{\mathbf{p}}$ collisions at $\sqrt{\mathbf{s}}=1.96$ TeV
• Updating and Optimizing Error PDFs in the Hessian Approach
• Determination of Strange Sea Quark Distributions from Fixed-target and Collider Data
• Neutrino Dimuon Production and the Strangeness Asymmetry of the Nucleon
• Charm-quark production in deep-inelastic neutrino scattering at NNLO in QCD
• Measurement of forward $\mathrm{Z}\to {\mathrm{e}}^{+}{\mathrm{e}}^{-}$ production at $\sqrt{s}=8$TeV
• The Strangest Proton?
• Uncertainties on ${\alpha }_S$ in the MMHT2014 global PDF analysis and implications for SM predictions
• Measurement of associated production of a W boson and a charm quark in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Strange sea determination from collider data
• Strange Quark PDFs and Implications for Drell-Yan Boson Production at the LHC
• Updating and Optimizing Error PDFs in the Hessian Approach. Part II
• Probing nucleon strange and charm distributions with lattice QCD
• Connected and Disconnected Sea Partons from CT18 Parametrization of PDFs

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