F2 Structure Function and Higher-twist Contributons (Nonsinglet Case)
A. V. Kotikov, V. G. Krivokhijine
Abstract
We performed the combine fits of SLAC, BCDMS and NMC data at NLO level. The data are fitted very well with different parametrizations of higher twist contributions. The theory-based parametrizations lead to the low values of QCD parameter Λf=4MS 140 21 MeV (or αs(M2Z)= 0.103 0.002).
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