Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-11-16
Phys.Rev. D71 (2005) 034013
Physics
High Energy Physics
High Energy Physics - Phenomenology
11 pages, LaTeX, 7 figures
Scientific paper
10.1103/PhysRevD.71.034013
We compute the order alpha_s^2 corrections to the one particle inclusive electroproduction cross section of hadrons with non vanishing transverse momentum. We perform the full calculation analytically, and obtain the expression of the factorized (finite) cross section at this order. We compare our results with H1 data on forward production of pi^0, and discuss the phenomenological implications of the rather large higher order contributions obtained in that case. Specifically, we analyze the cross section sensitivity to the factorization and renormalization scales, and to the input fragmentation functions, over the kinematical region covered by data. We conclude that the data is well described by the O(alpha_s^2) predictions within the theoretical uncertainties and without the inclusion of any physics content beyond the DGLAP approach.
Daleo Alejandro
de Florian Daniel
Sassot Rodolfo
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