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arXiv · hep-ph/9903397

How fast do small x structure function rise ? A comparative analysis

P. Desgrolard·L. Jenkovszky·A. Lengyel·F. Paccanoni
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Abstract

We parametrize the small x, singlet component of the proton structure function F_2 by powers and logarithms of 1/x for discrete values of Q^2 between 0.2 and 2000 GeV^2, and compare these parametrizations by applying the criterion of minimal $χ^2$. The obtained values of the fitted parameters may be used to study the evolution of F_2 in Q^2 and/or in discriminating between dynamical models. A slowing-down in the increase of F_2 towards highest available values of Q^2 is revealed. The effect is quantified in terms of the derivative ${\frac{d\ell n F_2(x,Q^2)}{d\ell n (1/x)}}$.

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P. Desgrolard, L. Jenkovszky, A. Lengyel, F. Paccanoni. 1999-03-26. How fast do small x structure function rise ? A comparative analysis. https://doi.org/10.1016/s0370-2693(99)00650-4

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