Next to leading order evolution of SIDIS processes in the forward region

Details Next to leading order evolution of SIDIS processes in the forward region Next to leading order evolution of SIDIS processes in the forward region

2003-09-08

arxiv.org/abs/hep-ph/0309073v1

Nucl.Phys. B673 (2003) 357-384

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, 4 ps figures, uses revtex4 and feynmf. Accepted for publication in Nuclear Physics B

Scientific paper

We compute the order $\alpha_s^2$ quark initiated corrections to semi-inclusive deep inelastic scattering extending the approach developed recently for the gluon contributions. With these corrections we complete the order $\alpha_s^2$ QCD description of these processes, verifying explicitly the factorization of collinear singularities. We also obtain the corresponding NLO evolution kernels, relevant for the scale dependence of fracture functions. We compare the non-homogeneous evolution effects driven by these kernels with those obtained at leading order accuracy and discuss their phenomenological implications.

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