Nonvanishing tensor polarization of sea quarks in polarized deuterons

Abstract

We propose two new sources of a substantial tensor polarization of sea partons in the deuteron: the diffractive nuclear shadowing which depends on the alignment of nucleons in the polarized deuteron and the nuclear excess of pions in the deuteron which is sensitive to the spin state of the deuteron. The corresponding tensor structure function $b_2(x,Q^2)$ rises towards small x and we predict an about one per cent tensor asymmetry $A_2(x,Q^2)=b_2(x,Q^2)/F_{2d}(x,Q^2)$ which by almost two orders in magnitude exceeds the effect evaluated earlier in the impulse approximation. The both mechanisms for tensor structure function break the sum rule $\int dx{b}_1(x,Q^2)=0$ suggested by Close and Kumano. We comment on the impact of tensor polarization on the determination of the vector spin structure function $g_{1d}(x,Q^2)$ for the deuteron.

arXiv comment17 pages, LaTeX, including 3 eps-figures, uses epsfig-macro, comparison with the results of ref.[36] extended

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Cited by in corpus (25)

• Flavor Asymmetry of Antiquark Distributions in the Nucleon
• Nuclear Deep-Inelastic Lepton Scattering and Coherence Phenomena
• First Measurement of the Tensor Structure Function $b_1$ of the Deuteron
• Pionic and Hidden-Color, Six-Quark Contributions to the Deuteron b1 Structure Function
• Tensor-polarized structure function $b_1$ in the standard convolution description of the deuteron
• Structure functions in the polarized Drell-Yan processes with spin-1/2 and spin-1 hadrons: II. parton model
• Tensor-polarized quark and antiquark distribution functions in a spin-one hadron
• Structure functions in the polarized Drell-Yan processes with spin-1/2 and spin-1 hadrons: I. general formalism
• The Double Scattering Contribution to $b_1(x,Q^2)$ in the Deuteron
• Positivity bounds on spin-one distribution and fragmentation functions
• Theoretical estimate on tensor-polarization asymmetry in proton-deuteron Drell-Yan process
• Nuclear effects in the proton-deuteron Drell-Yan process
• Tensor polarization of vector mesons from quark and gluon fragmentation
• Target mass effects in deep-inelastic scattering on the deuteron
• Nuclear final-state interactions in deep inelastic scattering off the lightest nuclei
• Probing the transverse spin of quarks in deep inelastic scattering
• Projections of structure functions in a spin-one hadrons
• Tensor-polarized structure functions: Tensor structure of deuteron in 2020's
• Experimental Study of Tensor Structure Function of Deuteron
• Diffraction driven steep rise of spin structure function $g_{LT}=g_1+g_2$ at small x and DIS sum rules
• Semi-inclusive deep inelastic scattering off a tensor-polarized spin-1 target
• Final-state interactions in deep-inelastic scattering from a tensor polarized deuteron target
• Estimate on Spin Asymmetry for Drell-Yan Process at Fermilab with Tensor-Polarized Deuteron
• Radiative corrections to deep-inelastic $ed-$ scattering. Case of tensor polarized deuteron
• Standard convolution description of deuteron tensor spin structure