Impact of Higher Order and Soft Gluon Corrections on the Extraction of Higher Twist Effects in DIS
S. Schaefer, A. Schäfer, M. Stratmann
Abstract
The impact of recently calculated next-to-next-to-leading order QCD corrections and soft gluon resummations on the extraction of higher twist contributions to the deep-inelastic structure function F2 is studied using the BCDMS and SLAC data. It is demonstrated to which extent the need for higher twist terms is diminishing due to these higher order effects in the kinematical region, 0.35 x 0.85 and Q2>1.2 GeV2, investigated. In addition, theoretical uncertainties in the extraction of higher twist contributions are discussed, and comparisons to results obtained previously are made.
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