Strange Asymmetries in the Nucleon Sea

Abstract

Relativistic corrections to the strange axial form factor are evaluated within a light-cone formalism, taking into account effects due to the breaking of Lorentz covariance associated with the use of one-body currents. Similar corrections are known to also be needed for the magnetic form factor, and we discuss the importance of these for recent data on strange electromagnetic form factors from the HAPPEX Collaboration at Jefferson Lab. The strange vector form factors, the strange axial charge, and the asymmetries in strange quark distributions are shown to be consistently correlated within the chiral cloud model.

13 pages revtex, 4 figures, minor additions, to appear in Phys. Lett. B

References in corpus (10)

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• Spin Structure of the Proton from Polarized Inclusive Deep-Inelastic Muon-Proton Scattering
• Measurement of the Proton's Neutral Weak Magnetic Form Factor
• Gauge-invariant tree-level photoproduction amplitudes with form factors
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• Dynamics of Light Antiquarks in the Proton
• K^* Mesons and Nucleon Strangeness
• KN Scattering and the Nucleon Strangeness Radius
• The nucleon wave function in light-front dynamics
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• Charting the coming synergy between lattice QCD and high-energy phenomenology
• Strange quark asymmetry in the proton in chiral effective theory
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• Perturbative and nonperturbative contributions to the strange quark asymmetry in the nucleon
• Intrinsic strange distributions in the nucleon from the light-cone models
• Physics of the Nucleon Sea Quark Distributions
• Can the meson cloud explain the nucleon strangeness?
• Nucleon strange $s\bar{s}$ asymmetry to the $\Lambda /\bar{\Lambda }$ fragmentation
• The s-s(bar) asymmetry in nucleon and "NuTeV anomaly"
• Additional Corrections to the Gross-Llewellyn Smith Sum Rule
• Strange quark helicity in the proton from chiral effective theory
• Electromagnetic contribution to charge symmetry violation in parton distributions
• Study of the $s-\bar{s}$ asymmetry in the proton
• Nucleon parton distributions from hadronic quantum fluctuations
• Helicity-dependent distribution of strange quarks in the proton from nonlocal chiral effective theory