Role of the Delta (1232) in DIS on polarized ${}^3$He and extraction of the neutron spin structure function $g_1^n(x,Q^2)$

Abstract

We consider the effect of the transitions $n\to {\Delta }^0$ and $p\to {\Delta }^{+}$ in deep inelastic scattering on polarized ${}^3$He on the extraction of the neutron spin structure function $g_1^n(x,Q^2)$. 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 $\Delta$ increases $g_1^n(x,Q^2)$ by $10÷40$% in the range $0.05\le x\le 0.6$, where our considerations are applicable and most of the data for $g_1^n(x,Q^2)$ exist.

23 pages, 6 figures, revtex

References in corpus (3)

• Models for the Polarized Parton Distributions of the Nucleon
• Measurement of the Deuteron Spin Structure Function g_1^d(x) for 1 (GeV/c)^2 < Q^2 < 40 (GeV/c)^2
• Inclusive and Semi-Inclusive Polarized DIS Data Revisited

Cited by in corpus (7)

• Recent observation of short range nucleon correlations in nuclei and their implications for the structure of nuclei and neutron stars
• Complete analysis of spin structure function g1 of He-3
• Electron-deuteron deep-inelastic scattering with spectator nucleon tagging and final-state interactions at intermediate x
• Study of spin-dependent structure functions of ${}^3\mathrm{He}$ and ${}^3\mathrm{H}$ at NNLO approximation and corresponding nuclear corrections
• Comparative study of nuclear effects in polarized electron scattering from 3He
• On the Optimum Long Baseline for the Next Generation Neutrino Oscillation Experiments
• Effect of symmetry breaking of polarized light sea quarks on the nucleon and nuclear structure functions, and sum rules