Abstract
The isoscalar nucleon structure functionsF 2(x, Q 2) andxF 3(x, Q 2) are measured in the range 0<Q 2<64 GeV2, 1.7<W 2<250 GeV2,x<0.7 using ν and\(\bar v\) interactions on neon in BEBC. The data are used to evaluate possible higher twist contributions and to determine their impact on the evaluation of the QCD parameter Λ. In contrast to previous analyses reaching to such lowW 2 values, it is found that a low\(\Lambda _{\overline {MS} } \) value in the neighbourhood of 100 MeV describes the data adequately and that the contribution of dynamical higher twist effects is small and negative.
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Supported by University of Western Australia, Hackett Scholarship, now at University of Birmingham
Now at FNAL
Now at RAL
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BEBC WA 59 Collaboration., Varvell, K., Cooper-Sarkar, A.M. et al. Measurement of the structure functionsF 2 andxF 3 and comparison with QCD predictions including kinematical and dynamical higher twist effects. Z. Phys. C - Particles and Fields 36, 1–13 (1987). https://doi.org/10.1007/BF01556159
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DOI: https://doi.org/10.1007/BF01556159