Study of the asymmetry in the proton
arXiv:1803.02920 · doi:10.1016/j.nuclphysa.2018.02.005
Abstract
The study of asymmetry is essential to better understand of the structure of nucleon and also the perturbative and nonperturbative mechanisms for sea quark generation. Actually, the nature and dynamical origins of this asymmetry have always been an interesting subject to research both experimentally and theoretically. One of the most powerful models can lead to asymmetry is the meson-baryon model (MBM). In this work, using a simplified configuration of this model suggested by Pumplin, we calculate the asymmetry for different values of cutoff parameter , to study the dependence of model to this parameter and also to estimate the theoretical uncertainty imposed on the results due to its uncertainty. Then, we study the evolution of distributions obtained both at next-to-leading order (NLO) and next-to-next-to-leading order (NNLO) using different evolution schemes. It is shown that the evolution of the intrinsic quark distributions from a low initial scale, as suggested by Chang and Pang, is not a good choice at NNLO using variable flavor number scheme (VFNS).
arXiv comment33 pages, 9 captioned figures
References in corpus (85)
- Parton distributions for the LHC Run II
- Parton distributions from high-precision collider data
- New parton distribution functions from a global analysis of quantum chromodynamics
- Parton distributions in the LHC era: MMHT 2014 PDFs
- A Precise Determination of Electroweak Parameters in Neutrino-Nucleon Scattering
- nCTEQ15 - Global analysis of nuclear parton distributions with uncertainties in the CTEQ framework
- EPPS16: Nuclear parton distributions with LHC data
- Parton Distribution Functions, and Heavy-Quark Masses for LHC Run II
- Improved Measurement of the Asymmetry in the Nucleon Sea
- Constraints on large- parton distributions from new weak boson production and deep-inelastic scattering data
- Measurement of the Light Antiquark Flavor Asymmetry in the Nucleon Sea
- QCDNUM: Fast QCD Evolution and Convolution
- The ABM parton distributions tuned to LHC data
- Precise Measurement of Dimuon Production Cross-Sections in muon neutrino Fe and muon antineutrino Fe Deep Inelastic Scattering at the Tevatron
- Flavor Asymmetry of Antiquark Distributions in the Nucleon
- Determination of the Strange Quark Content of the Nucleon from a Next-to-Leading-Order QCD Analysis of Neutrino Charm Production
- Efficient evolution of unpolarized and polarized parton distributions with QCD-PEGASUS
- First simultaneous extraction of spin-dependent parton distributions and fragmentation functions from a global QCD analysis
- The Quark/Antiquark Asymmetry of the Nucleon Sea
- The Flavor Asymmetry of the Light Quark Sea from Semi-inclusive Deep-inelastic Scattering
- Flavour and Spin of the Proton and the Meson Cloud
- Delineating parton distributions and the strong coupling
- Iterative Monte Carlo analysis of spin-dependent parton distributions
- dbar/ubar Asymmetry and the Origin of the Nucleon Sea
- 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
- Parton-to-Kaon Fragmentation Revisited
- A new global analysis of deep inelastic scattering data
- Global analysis of nuclear parton distribution functions and their uncertainties at next-to-next-to-leading order
- CT14 Intrinsic Charm Parton Distribution Functions from CTEQ-TEA Global Analysis
- Measurement of associated W + charm production in pp collisions at sqrt(s) = 7 TeV
- Strangeness in the nucleon: neutrino-nucleon and polarized electron-nucleon scattering
- Perturbative generation of a strange-quark asymmetry in the nucleon
- Reassessment of the NuTeV determination of the Weinberg angle
- Phenomenology of nonperturbative charm in the nucleon
- Light-Cone Models for Intrinsic Charm and Bottom
- Chiral Symmetry and the Nucleon Spin Structure Functions
- Measurement of charm production in neutrino charged-current interactions
- On the Flavor Structure of the Constituent Quark
- Flavor Asymmetry of the Nucleon Sea and the Five-Quark Components of the Nucleons
- Chiral Quark Model of Nucleon Spin-Flavor Structure with SU(3) and Axial-U(1) Breakings
- Neutrino Dimuon Production and the Strangeness Asymmetry of the Nucleon
- Flavor Structure of the Nucleon Sea
- Chiral Symmetry and the Nucleon Structure Functions
- Light-flavor sea-quark distributions in the nucleon in the SU(3) chiral quark soliton model (I) -- phenomenological predictions --
- HERA Anomaly and Hard Charm in the Nucleon
- Virtual Meson Cloud of the Nucleon and Intrinsic Strangeness and Charm
- Effect of Asymmetric Strange-Antistrange Sea to the NuTeV Anomaly
- Analytic derivation of the next-to-leading order proton structure function based on the Laplace transformation
- Next-to-next-to-leading order QCD analysis of spin-dependent parton distribution functions and their uncertainties: Jacobi polynomials approach
- The quark - antiquark asymmetry of the strange sea of the nucleon
- Extraction of Various Five-Quark Components of the Nucleons
- Constraints on spin-dependent parton distributions at large x from global QCD analysis
- Nucleon spin structure functions at NNLO in the presence of target mass corrections and higher twist effects
- Proton fragmentation functions considering finite-mass corrections
- First determination of -meson fragmentation functions and their uncertainties at next-to-next-to-leading order
- QCD analysis of nucleon structure functions in deep-inelastic neutrino-nucleon scattering: Laplace transform and Jacobi polynomials approach
- Global study of nuclear modifications on parton distribution functions
- Strange Asymmetries in the Nucleon Sea
- Contribution of asymmetric strange-antistrange sea to the Paschos-Wolfenstein relation
- Strange quark asymmetry in the proton in chiral effective theory
- Strange / anti-strange asymmetry in the nucleon sea
- Nuclear parton density functions from jet production in DIS at the EIC
- On the phenomenological analyses of - asymmetry in the nucleon sea
- Analytical approaches to the determination of spin-dependent parton distribution functions at NNLO approximation
- Search for intrinsic charm in vector boson production accompanied by heavy flavor jets
- Study of spin-dependent structure functions of and at NNLO approximation and corresponding nuclear corrections
- Constraints on asymmetry of the proton in chiral effective theory
- NNLO nucleon parton distributions from a light-cone quark model dressed with its virtual meson cloud
- Determination of the fragmentation functions from an NLO QCD analysis of the HERMES data on pion multiplicities
- Nonperturbative contribution to the strange-antistrange asymmetry of the nucleon sea
- On the extraction of the intrinsic light-quark sea in the proton
- Study of isolated prompt photon production in -Pb collisions for the ALICE kinematics
- Flavor structure of the unpolarized and longitudinally-polarized sea-quark distributions in the nucleon
- Intrinsic strange distributions in the nucleon from the light-cone models
- Influence of Heavy Quark Recombination on the Nucleon Strangeness Asymmetry
- Nucleon strange asymmetry to the fragmentation
- Predictions for the isolated prompt photon production at the LHC at 13 TeV
- Physics with charm particles produced in neutrino interactions. A historical recollection
- Strange quark-antiquark asymmetry of nucleon sea from polarization
- Intrinsic light and strange quark--antiquark pairs in the proton and nonperturbative strangeness suppression
- Improved determination of flavor asymmetry in the proton by BONuS experiment at JLAB and using an approach by Brodsky, Hoyer, Peterson, and Sakai
- The impact of intrinsic charm on the parton distribution functions
- The uncertainty of parton distribution functions due to physical observables in a global analysis
- NuTeV Anomaly Versus Strange-Antistrange Asymmetry