The Charm Parton Content of the Nucleon

Abstract

We investigate the charm sector of the nucleon structure phenomenologically, using the most up-to-date global QCD analysis. Going beyond the common assumption of purely radiatively generated charm, we explore possible degrees of freedom in the parton parameter space associated with nonperturbative (intrinsic) charm in the nucleon. Specifically, we explore the limits that can be placed on the intrinsic charm (IC) component, using all relevant hard-scattering data, according to scenarios in which the IC has a form predicted by light-cone wave function models; or a form similar to the light sea-quark distributions. We find that the range of IC is constrained to be from zero (no IC) to a level 2--3 times larger than previous model estimates. The behaviors of typical charm distributions within this range are described, and their implications for hadron collider phenomenology are briefly discussed.

arXiv comment15 pages, LaTeX

References in corpus (21)

• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• Inclusive Jet Production, Parton Distributions, and the Search for New Physics
• Hard-scattering factorization with heavy quarks: A general treatment
• A Variable-Flavour Number Scheme for NNLO
• New Method for Detecting Charged (Pseudo-)Scalars at Colliders
• Reanalysis of the EMC charm production data with extrinsic and intrinsic charm at NLO
• Study of the Fundamental Structure of Matter with an Electron-Ion Collider
• QCD Corrections to Scalar Production via Heavy Quark Fusion at Hadron Colliders
• Perturbative generation of a strange-quark asymmetry in the nucleon
• Light-Cone Models for Intrinsic Charm and Bottom
• ON THE INTRINSIC CHARM COMPONENT OF THE NUCLEON
• Diffractive Higgs Production from Intrinsic Heavy Flavors in the Proton
• HERA Anomaly and Hard Charm in the Nucleon
• Virtual Meson Cloud of the Nucleon and Intrinsic Strangeness and Charm
• Tevatron-for-LHC Report: Higgs
• Leading Charm in Hadron-Nucleus Interactions in the Intrinsic Charm Model
• Azimuthal Asymmetries in DIS as a Probe of Intrinsic Charm Content of the Proton
• New Results in Light-Front Phenomenology
• Charm in the Nucleon
• Charm Antiquark and Charm Quark in the Nucleon
• Global QCD Analysis and Hadron Collider Physics

Cited by in corpus (97)

• Parton distributions for the LHC
• Parton distributions for the LHC Run II
• Implications of CTEQ global analysis for collider observables
• A Large Hadron Electron Collider at CERN: Report on the Physics and Design Concepts for Machine and Detector
• Impact of Heavy Quark Masses on Parton Distributions and LHC Phenomenology
• Heavy quarks in deep-inelastic scattering
• AKK Update: Improvements from New Theoretical Input and Experimental Data
• A determination of parton distributions with faithful uncertainty estimation
• The Structure of the Proton in the LHC Precision Era
• 50 Years of Quantum Chromodynamics
• Distribution Functions of the Nucleon and Pion in the Valence Region
• Inclusive Charmed-Meson Production at the CERN LHC
• Prompt charm production in pp collisions at sqrt(s)=7 TeV
• Open Heavy Flavor in QCD Matter and in Nuclear Collisions
• Physics Opportunities of a Fixed-Target Experiment using the LHC Beams
• A meta-analysis of parton distribution functions
• Cold Nuclear Matter Effects on J/psi and Upsilon Production at the LHC
• Progress in the Determination of the Partonic Structure of the Proton
• New Observables in Inclusive Production of Quarkonia
• Precision determination of electroweak parameters and the strange content of the proton from neutrino deep-inelastic scattering
• A review of the intrinsic heavy quark content of the nucleon
• 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
• CT14 Intrinsic Charm Parton Distribution Functions from CTEQ-TEA Global Analysis
• Measurement of the Proton Structure Function F_L at Low x
• New limits on intrinsic charm in the nucleon from global analysis of parton distributions
• Heavy-Quarkonium Production in High Energy Proton-Proton Collisions at RHIC
• Novel Phenomenology of Parton Distributions from the Drell-Yan Process
• The Strange Parton Distribution of the Nucleon: Global Analysis and Applications
• Phenomenology of nonperturbative charm in the nucleon
• First measurement of charm production in fixed-target configuration at the LHC
• Intrinsic Charm Parton Distribution Functions from CTEQ-TEA Global Analysis
• Intrinsic charm in a matched general-mass scheme
• QCD corrections to J/psi polarisation in pp collisions at RHIC
• The Present and Future of QCD
• Accurate QCD predictions for heavy-quark jets at the Tevatron and LHC
• Flavor Asymmetry of the Nucleon Sea and the Five-Quark Components of the Nucleons
• Direct Photon Production in Association With A Heavy Quark At Hadron Colliders
• Flavor Structure of the Nucleon Sea
• Open charm hadroproduction and the charm content of the proton
• Quarkonium Physics at a Fixed-Target Experiment using the LHC Beams
• Structure Functions
• The persistent nonperturbative charm enigma
• Measurement of photon+b+X and photon+c+X production cross sections in ppbar collisions at sqrt(s)=1.96 TeV
• A Fixed-Target Programme at the LHC: Physics Case and Projected Performances for Heavy-Ion, Hadron, Spin and Astroparticle Studies
• Constraints on charm-anticharm asymmetry in the nucleon from lattice QCD
• Searching for intrinsic charm in the proton at the LHC
• Charm production in association with an electroweak gauge boson at the LHC
• Puzzles in Hadronic Physics and Novel Quantum Chromodynamics Phenomenology
• Extraction of Various Five-Quark Components of the Nucleons
• Measurement of the differential photon+ c-jet cross section and the ratio of differential photon+ c and photon+ b cross sections in proton-antiproton collisions at sqrt(s) = 1.96 TeV
• PQCD Formulations with Heavy Quark Masses and Global Analysis
• Comment on "New Limits on Intrinsic Charm in the Nucleon from Global Analysis of Parton Distributions"
• The Quark and Gluon Structure of the Proton
• Probing gluon and heavy-quark nuclear PDFs with photon + heavy quark production in pA collisions
• Higgs Hadroproduction at Large Feynman x
• Next-to-leading order QCD corrections to s-channel single top quark production and decay at the LHC
• The Ratio $R=F_L/F_T$ in DIS as a Probe of the Charm Content of the Proton
• Looking for intrinsic charm in the forward region at BNL RHIC and CERN LHC
• On the Perturbative Stability of the QCD Predictions for the Ratio $R=F_L/F_T$ in Heavy-Quark Leptoproduction
• Intrinsic charm contribution to the prompt atmospheric neutrino flux
• Intrinsic charm in the nucleon and charm production at large rapidities in collinear, hybrid and $k_T$-factorization approaches
• The impact of the intrinsic charm quark content of the proton on differential $\gamma +c$ cross section
• Limits on Intrinsic Charm Production from the SeaQuest Experiment
• Dynamic versus Static Hadronic Structure Functions
• Prompt photon and associated heavy quark production at hadron colliders with kt-factorization
• Phenomenological implications of the intrinsic charm in the $Z$ boson production at the LHC
• Intrinsic charm content of the nucleon and charmness-nucleon sigma term
• Forward heavy flavour production in p-p collisions at LHC and intrinsic quark components in proton
• Charm Production and QCD Analysis at HERA and LHC
• Inclusive photoproduction of D*+- mesons at next-to-leading order in the General-Mass Variable-Flavor-Number Scheme
• $D$ - meson production at very forward rapidities: estimating the intrinsic charm contribution
• The Physics of Heavy Quark Distributions in Hadrons: Collider Tests
• Energy Dependence of Intrinsic Charm Production: What is the Best Energy for Observation?
• Bottom Tetraquark Production at RHIC?
• The CDF dijet excess from intrinsic quarks
• Intrinsic strange distributions in the nucleon from the light-cone models
• Impacts of the intrinsic charm content of the proton on the ${\Xi }_{cc}$ hadroproduction at a fixed target experiment at the LHC
• CORSIKA Implementation of Heavy Quark Production and Propagation in Extensive Air Showers
• The Flavor Structure of the Nucleon Sea
• Hard QCD at hadron colliders
• Photon plus heavy quark production in high energy collisions within the target rest frame formalism
• Review of physics results from the Tevatron: QCD physics
• Contribution from Intrinsic Charm Production to Fixed-Target Interactions at the LHC
• Nucleon structure and hard p-p processes at high energies
• QCD Precision Measurements and Structure Function Extraction at a High Statistics, High Energy Neutrino Scattering Experiment: NuSOnG
• About possible contribution of intrinsic charm component to inclusive spectra of charmed mesons
• Constraining the Intrinsic Heavy Quark PDF via Direct Photon Production in Association with a Heavy Quark Jet
• Pair production of the T-odd leptons at the LHC
• Test of CDF dijet anomaly within the standard model
• Recent progress on intrinsic charm
• Heavy quark & direct photon production and heavy quark parton densities
• The Forward Physics Facility at the High-Luminosity LHC
• Physics of high energy atmospheric muons
• Charm production in association with W and Z at the LHC
• Improved determination of strange distribution function from the global analysis using BHPS model
• Open charm hadroproduction and the intrinsic charm content of the proton
• Novel Perspectives for Hadron Physics