Global fit to the charged leptons deep-inelastic-scattering data: alpha(s), parton distributions, and high twists - art. no. 094022

We perform the next-to-leading-order QCD analysis of the world data on incl usive deep-inelastic-scattering cross sections of charged leptons off the p roton and deuterium targets. The parton distributions, the value of strong- coupling constant alpha (s), and the twist-4 contributions to the structure functions F-2 and F-L are extracted with a complete account of the correla tions of data points due to the systematic errors. The sensitivity of the a lpha (s) value and the high-twist contribution to the procedures of account ing for the systematic errors are studied. The impact of theoretical uncert ainties on the value of alpha (s) and on the parton distributions is analyz ed. The obtained value of the strong-coupling constant taking into account these uncertainties is alpha (s)(M-Z) = 0.1165 +/-0.0017 (stat+syst) (+0.00 26)(-0.0034)(theor). The uncertainties of parton-parton luminosities for th e Fermilab and CERN LHC colliders are estimated.