The interplay between Sudakov resummation, renormalons and higher twist in deep inelastic scattering

Details The interplay between Sudakov resummation, renormalons and higher twist in deep inelastic scattering The interplay between Sudakov resummation, renormalons and higher twist in deep inelastic scattering

2002-10-30

arxiv.org/abs/hep-ph/0210429v1

Nucl.Phys. B653 (2003) 227-255

Physics

High Energy Physics

High Energy Physics - Phenomenology

32 pages, 12 post-script figures

Scientific paper

10.1016/S0550-3213(03)00035-X

We claim that factorization implies that the evolution kernel, defined by the logarithmic derivative of the N-th moment of the structure function d ln F_2^N / d ln Q^2, receives logarithmically enhanced contributions (Sudakov logs) from a single source, namely the constrained invariant mass of the jet. Available results from fixed-order calculations facilitate Sudakov resummation up to the next-to-next-to-leading logarithmic accuracy. We use additional all-order information on the physical kernel from the large-beta_0 limit to model the behaviour of further subleading logs and explore the uncertainty in extracting alpha_s and in determining the magnitude of higher-twist contributions from a comparison with data on high moments.

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