On the measurability of the structure function $g_1(X,Q^2)$ in $ep$ collisions at HERA

Details On the measurability of the structure function $g_1(X,Q^2)$ in $ep$ collisions at HERA On the measurability of the structure function $g_1(X,Q^2)$ in $ep$ collisions at HERA

1995-08-28

arxiv.org/abs/hep-ph/9508387v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages uuencoded ps-file, 3 figures changed, 1 figure added

Scientific paper

The possibility is investigated to measure the polarized structure function $g_1(x,Q^2)$ in the collider mode of HERA operating with a polarized lepton and proton beam. The $x$ dependence of $g_1$ can be measured at a statistical precision of $\sim 20\%~{\rm to}~80\%$ in the range $0.0005 < x < 0.5$ correlated to virtualities $15 < \langle Q^2 \rangle < 3500 \GeV^2$ at beam polarizations $\lambda_p \sim \lambda_e = 0.8$ and ${\cal L}_{int} = 60 \PB^{-1}$. At a low energy option, $E_p = 300 \GeV$, the statistical accuracy improves to values of $\sim 15\%~{\rm to}~50\%$ in the range $10^{-3} < x < 0.5$ and $10 < Q^2 < 800 \GeV^2$.

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