A Measurement of α_s(M_Z²) from the Gross Llewellyn Smith Sum Rule

1995/06/16 by NuTeV Collaboration
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #hep-ex

paper · pdf · doi:10.48550/arxiv.hep-ex/9506010

4 pages, ReVTeX, 2 figures in uuencoded file

arxiv created 1995/06/16 · arxiv updated 2009/11/30

Abstract

The Gross Llewellyn Smith sum rule has been measured at different values of four-momentum transfer squared (Q²) by combining the precise CCFR neutrino data with data from other deep-inelastic scattering experiments at lower values of Q². A comparison with the \cal O(α³_s) predictions of perturbative QCD yields a determination of α_s and its dependence on Q² in the range 1 GeV² < Q² < 20 GeV². Low \qsq tests have greater sensitivity to \alfs(\mztwo) than high \qsq tests, since at low Q², α_s is large and changing rapidly.

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