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Perturbative Evolution of Polarized Structure Functions
R. D. Ball
We review the perturbative evolution of the polarized structure functions g_1 and their associated parton distribution functions, with particular emphasis on the anomalous coupling…
Universality and Scaling in Perturbative QCD at Small x
Stefano Forte, Richard D. Ball
We present a pedagogical review of the universal scaling properties displayed by the structure function F_2 at small x and large Q^2 as measured at HERA. We first describe the deri…
A Next-to-Leading Determination of the Singlet Axial Charge and the Polarized Gluon Content of the Nucleon
R. D. Ball, S. Forte, G. Ridolfi
We perform a full next-to-leading analysis of the the available experimental data on the polarized structure function g_1 of the nucleon, and give a precise determination of its si…
Momentum Conservation at Small x
R. D. Ball, S. Forte
We discuss how momentum conservation is implemented in perturbative computations based on expansions of anomalous dimensions appropriate at small . We show that for any given ch…
Scheme Dependence at Small x
R. D. Ball, S. Forte
We discuss the evolution of F_2^p at small x, emphasizing the uncertainties related to expansion, fitting, renormalization and factorization scheme dependence. We find that perturb…
Determination of alpha_s from F_2^p at HERA
R. D. Ball, S. Forte
We compute the proton structure function F_2^p at small x and large Q^2 at next-to-leading order in alpha_s(Q^2), including summations of all leading and subleading logarithms of Q…