The Longitudinal Structure Function at the Third Order
Preprint
- 9 November 2004
Abstract
We compute the complete third-order contributions to the coefficient functions for the longitudinal structure function F_L, thus completing the next-to-next-to-leading order (NNLO) description of unpolarized electromagnetic deep-inelastic scattering in massless perturbative QCD. Our exact results agree with determinations of low even-integer Mellin moments and of the leading small-x terms in the flavour-singlet sector. In this letter we present compact and accurate parametrizations of the results and illustrate the numerical impact of the NNLO corrections.Keywords
All Related Versions
- Version 1, 2004-11-08, ArXiv
- Version 2, 2004-11-09, ArXiv
- Published version: , 606 (1-2), 123.
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