Strange sea determination from collider data

Abstract

We consider determinations of the strange sea in the nucleon based on the QCD analyses of data collected at the LHC with focus on the recent high-statistics ATLAS measurement of the $W^{\pm }$- and $Z$-boson production. We study the effect of different functional forms for parameterization of the parton distribution functions and the combination of various data sets in the analysis. We compare to earlier strange sea determinations and discuss ways to improve them in the future.

13 pages, 7 figures

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• Strange quark suppression from a simultaneous Monte Carlo analysis of parton distributions and fragmentation functions
• The x-dependence of hadronic parton distributions: A review on the progress of lattice QCD
• The Strangest Proton?
• Impact of heavy quark and quarkonium data on nuclear gluon PDFs
• Measurement of associated production of a W boson and a charm quark in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Impact of LHC vector boson production in heavy ion collisions on strange PDFs
• Flavor decomposition of the nucleon unpolarized, helicity and transversity parton distribution functions from lattice QCD simulations
• Predictions for $\mathrm{Z}$-boson production in association with a $\mathrm{b}$-jet at $\mathcal{O}({\alpha }_s^3)$
• nCTEQ15HIX -- Extending nPDF Analyses into the High-$x$, Low $Q^2$ Region
• Massive charged-current coefficient functions in deep-inelastic scattering at NNLO and impact on strange-quark distributions
• Constraining Parton Distribution Functions from Neutral Current Drell-Yan Measurements
• QCD analysis of the ATLAS and CMS $W^{\pm }$ and $Z$ cross-section measurements and implications for the strange sea density
• Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab
• Impact of Lattice Strangeness Asymmetry Data in the CTEQ-TEA Global Analysis
• W+charm production with massive c quarks in PowHel
• Gauge invariance and kaon production in deep inelastic scattering at low scales
• Mapping Parton Distributions of Hadrons with Lattice QCD
• Stability of Gluonic Systems with Multiple Soft Interactions
• Impact of inclusive hadron production data on nuclear gluon PDFs
• The Forward Physics Facility at the High-Luminosity LHC