The value of QCD coupling constant and power corrections in the structure function F2 measurements

We reanalyze the deep inelastic scattering data of BCDMS Collaboration by including the proper cuts of ranges with large systematic errors. We perform also the fits of high statistic deep inelastic scattering data of BCDMS, SLAC, NM and BFP Collaborations taking the data separately and in a combined way and find a good agreement between these analyses. We extract the values of both the QCD coupling constant αs(MZ2) up to NLO level and the power corrections to the structure function F2.