NNLO Calculation of DIS; Precision Determination of the Strong Coupling Constant, Extraction of the Gluon Density, and Comments on "Hidden" Gluinos

Abstract

Calculations of deep inelastic processes (DIS) to next-to-next to leading order are discussed. Fitting $ep$ experiment in the range $2.5\le Q^2\le 230Ge{V}^2$, we find the coupling ${\alpha }_s(M_Z^2)=0.1163\pm 0.0023$. We also get the gluon density $xG(x,Q^2\simeq 10Ge{V}^2)=0.51x^{-0.44}(1-x{)}^{8.1}$, and negative evidence for the existence of light gluinos

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