Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2012-02-23
Physics
High Energy Physics
High Energy Physics - Phenomenology
8 pages, LaTeX (PoS style), 2 eps-figures. Presented by N.A.L.P. at RADCOR 2011, Mamallapuram (India), September 2011. To appe
Scientific paper
Recently methods have been developed to extend the resummation of large-x double logarithms in inclusive deep-inelastic scattering (DIS) to terms not addressed by the soft-gluon exponentiation. Here we briefly outline our approach based on fixed-order results, the general large-x structure in dimensional regularization and the all-order factorization of mass singularities, which is directly applicable also to semi-inclusive e+e- annihilation (SIA). We then present some main results for the corresponding timelike splitting functions and transverse and longitudinal fragmentation functions. The close relation between DIS and SIA facilitates the determination of additional third-order results for the latter function which is fully known only at the next-to-leading order. Therefore all above quantities can be resummed at next-to-next-to-leading logarithmic accuracy.
Almasy Andrea A.
Lo Presti N. A.
Vogt Adam
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