Abstract

We study the tensor structure function ${b}_{1}{(x,Q}^{2})$ in deep inelastic scattering of an electron from a polarized deuteron target. We model the electron-nucleon cross section at the starting point for ${Q}^{2}$ evolution by vector-meson dominance. Shadowing due to the double scattering of vector mesons, along with the presence of a $d$-state admixture in a ground-state deuteron wave function gives rise to a nonvanishing contribution to ${b}_{1}{(x,Q}^{2})$. We find a large enhancement at low $x$ in qualitative agreement with other recent estimates of double-scattering contributions to ${b}_{1}{(x,Q}^{2})$. If the model is valid, it should apply within the range of present fixed-target experiments.

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