Perturbative generation of a strange-quark asymmetry in the nucleon

Abstract

We point out that perturbative evolution in QCD at three loops generates a strange-antistrange asymmetry s(x)-sbar(x) in the nucleon's sea just from the fact that the nucleon has non-vanishing up and down quark valence densities. The recently computed three-loop splitting functions allow for an estimate of this effect. We find that a fairly sizable asymmetry may be generated. Results for analogous asymmetries in the heavy-quark sector are also presented.

arXiv comment10 pages, 3 figures included

References in corpus (17)

• The Three-Loop Splitting Functions in QCD: The Non-Singlet Case
• The Three-Loop Splitting Functions in QCD: The Singlet Case
• A Precise Determination of Electroweak Parameters in Neutrino-Nucleon Scattering
• Improved Measurement of the $\bar{d}/\bar{u}$ Asymmetry in the Nucleon Sea
• High-Energy Factorization and Small-X Deep Inelastic Scattering Beyond Leading Order
• Uncertainties of predictions from parton distributions. I: experimental errors
• Measurement of the Light Antiquark Flavor Asymmetry in the Nucleon Sea
• Precise Measurement of Dimuon Production Cross-Sections in muon neutrino Fe and muon antineutrino Fe Deep Inelastic Scattering at the Tevatron
• The Flavor Asymmetry of the Light Quark Sea from Semi-inclusive Deep-inelastic Scattering
• Dynamical Parton Distributions Revisited
• Old and new physics interpretations of the NuTeV anomaly
• A new global analysis of deep inelastic scattering data
• On the Effect of Asymmetric Strange Seas and Isospin-Violating Parton Distribution Functions on sin2thetaW Measured at NuTeV
• The triple collinear limit of one-loop QCD amplitudes
• The Parton Structure of the Nucleon and Precision Determination of the Weinberg Angle in Neutrino Scattering
• On the phenomenological analyses of $s$-$\bar{s}$ asymmetry in the nucleon sea
• Strangeness and Hadron Structure

Cited by in corpus (72)

• Parton distributions for the LHC
• Parton distributions from LHC, HERA, Tevatron and fixed target data: MSHT20 PDFs
• Constraints on large-$x$ parton distributions from new weak boson production and deep-inelastic scattering data
• The Structure of the Proton in the LHC Precision Era
• 50 Years of Quantum Chromodynamics
• Top Quarks, Axigluons and Charge Asymmetries at Hadron Colliders
• Resolving the Tevatron Top Quark Forward-Backward Asymmetry Puzzle: Fully Differential Next-to-Next-to-Leading-Order Calculation
• Threshold Resummation for the Top Quark Charge Asymmetry
• The Charm Parton Content of the Nucleon
• Low Energy Precision Test of Supersymmetry
• Precision determination of electroweak parameters and the strange content of the proton from neutrino deep-inelastic scattering
• Nuclear PDFs from neutrino deep inelastic scattering
• Strange quark suppression from a simultaneous Monte Carlo analysis of parton distributions and fragmentation functions
• Massive color-octet bosons and the charge asymmetries of top quarks at hadron colliders
• Novel Phenomenology of Parton Distributions from the Drell-Yan Process
• Phenomenology of nonperturbative charm in the nucleon
• QED corrections to the Altarelli-Parisi splitting functions
• Parton momentum and helicity distributions in the nucleon
• Flavor Structure of the Nucleon Sea
• Neutrino Dimuon Production and the Strangeness Asymmetry of the Nucleon
• Fragmentation Functions at Next-to-Next-to-Leading Order Accuracy
• A next-to-next-to-leading order calculation of soft-virtual cross sections
• Higgs production in bottom quark fusion: Matching the 4- and 5-flavour schemes to third order in the strong coupling
• The hadronization of partons
• Structure Functions
• Constraints on charm-anticharm asymmetry in the nucleon from lattice QCD
• Nucleon sea in the effective chiral quark model
• Differences between charged-current coefficient functions
• Determination of Strange Sea Distributions from Neutrino-Nucleon Deep Inelastic Scattering
• Flavor decomposition of the nucleon unpolarized, helicity and transversity parton distribution functions from lattice QCD simulations
• Strange sea determination from collider data
• Helicity Parton Distributions at a Future Electron-Ion Collider: A Quantitative Appraisal
• NNLO QCD predictions for W+c-jet production at the LHC
• Strangeness asymmetry of the nucleon in the statistical parton model
• Nonperturbative strange-quark sea from lattice QCD, light-front holography, and meson-baryon fluctuation models
• Strange quark asymmetry in the proton in chiral effective theory
• Quark asymmetries in the proton from a model for parton densities
• Strange quark asymmetry in the nucleon and the NuTeV anomaly
• Jet Charge: A new tool to probe the anomalous $Zb\bar{b}$ couplings at the EIC
• On the NuTeV anomaly and the asymmetry of the strange sea in the nucleon
• The anomalous $Zb\bar{b}$ couplings at the HERA and EIC
• Multiple soft radiation at one-loop order and the emission of a soft quark-antiquark pair
• NNLO nucleon parton distributions from a light-cone quark model dressed with its virtual meson cloud
• Hadron plus photon production in polarized hadronic collisions at next-to-leading order accuracy
• Parton distributions from nonlocal chiral SU(3) effective theory: Flavor asymmetries
• Nuclear modification difference between u_v and d_v distributions and its relation to NuTeV sin^2 theta_W anomaly
• Form factors and other measures of strangeness in the nucleon
• Impact of Lattice Strangeness Asymmetry Data in the CTEQ-TEA Global Analysis
• Prospects of Open Charm Production at GSI-FAIR and J-PARC
• Nonperturbative contribution to the strange-antistrange asymmetry of the nucleon sea
• A detailed investigation of W+c-jet at the LHC
• The Spin Budget of the Proton at NNLO and Beyond
• The Physics of Heavy Quark Distributions in Hadrons: Collider Tests
• W+charm production with massive c quarks in PowHel
• Towards a model independent approach to fragmentation functions
• Perturbative and nonperturbative contributions to the strange quark asymmetry in the nucleon
• Influence of Heavy Quark Recombination on the Nucleon Strangeness Asymmetry
• Nucleon strange $s\bar{s}$ asymmetry to the $\Lambda /\bar{\Lambda }$ fragmentation
• Charge symmetry violation: a NNLO study of partonic observables
• Generalized parton distributions of sea quarks in the proton from nonlocal chiral effective theory
• Measurement of the production cross section for a W boson in association with a charm quark in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Factorization of the forward-backward charge asymmetry and measurements of the weak mixing angle and proton structure at hadron colliders
• Strange quark-antiquark asymmetry of nucleon sea from $\Lambda /\bar{\Lambda }$ polarization
• Possible Explanations for the NuTeV Weinberg Angle Measurement
• Strange quark helicity in the proton from chiral effective theory
• Effect due to charge symmetry violation on the Paschos-Wolfenstein relation
• Deep-Inelastic Scattering at TeV Energies with LHC Muons
• QED corrections to parton distributions and Altarelli-Parisi splitting functions in the polarized case
• The like-sign dimuon charge asymmetry at the Tevatron: corrections from B meson fragmentation
• Study of the $s-\bar{s}$ asymmetry in the proton
• Deep inelastic neutrino interactions
• Challenges in the extraction of physics beyond the Standard Model from electron scattering