Flavor Asymmetry of the Nucleon Sea and W Boson Production

Abstract

The advantage and feasibility of using $W$-boson production to extract unique information on the flavor asymmetry of the $\bar{u}$ and $\bar{d}$ sea-quark distributions in the proton are examined. The $W^{+}$ and $W^{-}$ production cross section ratios in $p+p$ collisions are shown to be sensitive to the $\bar{d}/\bar{u}$ ratios, and they are free from charge-symmetry-breaking and nuclear-binding effects. The feasibility for measuring these ratios at the RHIC and LHC proton-proton colliders, as well as the expected sensitivity to the $\bar{d}/\bar{u}$ ratios, are also presented.

arXiv comment7 pages, 4 figures (updated figures)

References in corpus (20)

• Parton distributions for the LHC
• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• Improved Measurement of the $\bar{d}/\bar{u}$ Asymmetry in the Nucleon Sea
• Measurement of the Light Antiquark Flavor Asymmetry in the Nucleon Sea
• Flavor Asymmetry of Antiquark Distributions in the Nucleon
• Dynamical parton distributions of the nucleon and very small-x physics
• The Flavor Asymmetry of the Light Quark Sea from Semi-inclusive Deep-inelastic Scattering
• Flavor Asymmetry of Light Quarks in the Nucleon Sea
• dbar/ubar Asymmetry and the Origin of the Nucleon Sea
• Precision Measurements with High Energy Neutrino Beams
• Dynamics of Light Antiquarks in the Proton
• Shadowing in Deuterium
• Parton Distributions from W+- and Z Production in Polarized pp and pn Collisions at RHIC
• The Validity of Charge Symmetry for Parton Distributions
• Flavour Distributions in the Nucleons: SU(2) Sea Asymmetry or Isospin Symmetry Breaking?
• Charge Symmetry Breaking in the Valence Quark Distributions of the Nucleon
• Probing u-bar/d-bar Asymmetry in the Proton via W and Z Production
• Hadronic $W$ production and the Gottfried Sum Rule
• Nuclear Effects on the Extraction of Neutron Structure Functions
• On the Interpretation of the NA51 Experiment

Cited by in corpus (4)

• Novel Phenomenology of Parton Distributions from the Drell-Yan Process
• Sea quark contents of octet baryons
• Productions of $Z^0$ and $W^{+}/W^{-}$ in Relativistic Heavy-Ion Collisions at the LHC
• Sea flavor content of octet baryons and intrinsic five-quark Fock states