Proton-deuteron asymmetry in Drell-Yan processes and polarized light-antiquark distributions

Abstract

We discuss the relation between the ratio of the proton-deuteron (pd) Drell-Yan cross section to the proton-proton (pp) one Δ_{(T)} σ_{pd}/2 Δ_{(T)} σ_{pp} and the flavor asymmetry in polarized light-antiquark distributions. Using a recent formalism of the polarized pd Drell-Yan process, we show that the difference between the pp and pd cross sections is valuable for finding not only the flavor asymmetry in longitudinally polarized antiquark distributions but also the one in transversity distributions. It is especially important that we point out the possibility of measuring the flavor asymmetry in the transversity distributions because it cannot be found in W production processes and inclusive lepton scattering due to the chiral-odd property.

10 pages, LATEX2e with epsfig.sty, 4 eps figures. Complete postscript file including the figures is available at http://www-hs.phys.saga-u.ac.jp . Email: [email protected], [email protected]

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Cited by in corpus (18)

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• Polarized light-antiquark distributions in a meson-cloud model
• Tensor-polarized quark and antiquark distribution functions in a spin-one hadron
• Theoretical estimate on tensor-polarization asymmetry in proton-deuteron Drell-Yan process
• Enhanced Tensor Polarization in Solid-State Targets
• Polarized antiquark flavor asymmetry: Pauli blocking vs. the pion cloud
• Soft parton radiation in polarized vector boson production: theoretical issues
• Projections of structure functions in a spin-one hadrons
• Tensor-polarized structure functions: Tensor structure of deuteron in 2020's
• Modeling alignment enhancement for solid polarized targets
• Parton distribution functions and fragmentation functions of spin-1 hadrons
• Polarized light-flavor antiquarks from Drell-Yan processes of h+\vec{N}\to\vec{l^{+-}} + l^{-+} + X
• Semi-inclusive deep inelastic scattering off a tensor-polarized spin-1 target
• Isovector helicity quark quasi-distributions inside a large Nc nucleon
• Nuclear effects in polarized proton-deuteron Drell-Yan processes