Role of the Delta (1232) in DIS on polarized ³He and extraction of the neutron spin structure function g₁ⁿ(x,Q²)
Boros, C. · Guzey, V. · Strikman, M. · Thomas, A. W.
Original · EN
We consider the effect of the transitions n → Δ⁰ and p → Δ⁺ in deep inelastic scattering on polarized ³He on the extraction of the neutron spin structure function g₁ⁿ(x,Q²). Making the natural assumption that these transitions are the dominant non-nucleonic contributions to the renormalization of the axial vector coupling constant in the A=3 system, we find that the effect of Δ increases g₁ⁿ(x,Q²) by 10 ÷40% in the range 0.05 ≤ x ≤ 0.6, where our considerations are applicable and most of the data for g₁ⁿ(x,Q²) exist.
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