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arXiv · hep-ph/0404287

The Evolution of Hadron Spectra in the Modified Leading Logarithm Approximation

S. Albino·B. A. Kniehl·G. Kramer·W. Ochs
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Abstract

We perform fits of $Λ_{\rm QCD}$ and the gluon fragmentation function $D(x,Q)$ at initial scale $Q_0 \ggΛ_{\rm QCD}$ to charged light hadron momentum spectra data by evolving in the Modified Leading Logarithm Approximation. Without additional assumptions, we achieve a good description of the available data for $ξ=\ln(1/x)$ up to and around the Gaussian peak, and values of $Λ_{\rm QCD}$ acceptably close to those in the literature. In particular, we find that this procedure describes the position of the peak, and, in contrast to the Limiting Spectrum, also the normalization.

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S. Albino, B. A. Kniehl, G. Kramer, W. Ochs. 2004-04-30. The Evolution of Hadron Spectra in the Modified Leading Logarithm Approximation. https://doi.org/10.1140/epjc%2Fs2004-01875-4

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