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arXiv · hep-ph/0610078

Power-like corrections and the determination of the gluon distribution

F. Hautmann
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Abstract

Power-suppressed corrections to parton evolution may affect the theoretical accuracy of current determinations of parton distributions. We study the role of multigluon-exchange terms in the extraction of the gluon distribution for the Large Hadron Collider (LHC). Working in the high-energy approximation, we analyze multi-gluon contributions in powers of 1/Q^2. We find a moderate, negative correction to the structure function's derivative d F_2 / d \ln Q^2, characterized by a slow fall-off in the region of low to medium Q^2 relevant for determinations of the gluon at small momentum fractions.

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F. Hautmann. 2006-10-06. Power-like corrections and the determination of the gluon distribution. https://doi.org/10.1016/j.physletb.2006.10.053

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