Abstract
Existing data on the (unpolarised) transverse structure function of the proton are analyzed for large values of the Bjorken variable x. The leading-twist and a phenomenological higher-twist contributions are simultaneously determined from a power correction analysis of the Nachtmann moments for values of the squared four-momentum transfer between ∼1 and 20 (GeV/ c) 2. The results obtained adopting the next-to-leading-order approximation and those including the effects of soft gluon resummation are compared. The sensitivity of the extraction of large- x higher twists to high-order radiative corrections as well as to the value of α s ( M Z 2) is illustrated.
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