A Measurement of $α_s(M_Z^2)$ from the Gross Llewellyn Smith Sum Rule

Details A Measurement of $α_s(M_Z^2)$ from the Gross Llewellyn Smith Sum Rule A Measurement of $α_s(M_Z^2)$ from the Gross Llewellyn Smith Sum Rule

1995-06-16

arxiv.org/abs/hep-ex/9506010v1

Physics

High Energy Physics

High Energy Physics - Experiment

4 pages, ReVTeX, 2 figures in uuencoded file

Scientific paper

The Gross Llewellyn Smith sum rule has been measured at different values of four-momentum transfer squared ($Q^{2}$) by combining the precise CCFR neutrino data with data from other deep-inelastic scattering experiments at lower values of $Q^{2}$. A comparison with the ${\cal O}(\alpha^{3}_{s})$ predictions of perturbative QCD yields a determination of $\alpha_{s}$ and its dependence on $Q^{2}$ in the range $1\,GeV^2 < Q^{2} < 20 \,GeV^{2}$. Low \qsq\ tests have greater sensitivity to \alfs(\mztwo) than high \qsq\ tests, since at low $Q^2$, $\alpha_s$ is large and changing rapidly.

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