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arXiv · hep-ph/9810546

Small-x one-particle-inclusive quantities in the CCFM approach

G. Bottazzi·G. Marchesini·G. P. Salam·M. Scorletti
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Abstract

This article presents the results of a quantitative study of the small-x data at HERA, using the CCFM equation. The first step consists of choosing the version of the CCFM equation to be used, corresponding to selecting a particular subset of next-to-leading-logarithmic corrections --- the choice is constrained by requiring a phenomenologically reasonable small-x growth. For the time being, the parts of the splitting functions that are finite at z=0 have been left out. We then examine results for F_2^c, R, the transverse energy flow, the charged-particle transverse-momentum spectrum and the forward-jet cross section and compare to data. While some of the data is reproduced better than with DGLAP-based calculations, the agreement is not entirely satisfactory, suggesting that the approach developed here is not yet suitable for detailed phenomenology. We discuss why, and suggest directions for future work.

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G. Bottazzi, G. Marchesini, G. P. Salam, M. Scorletti. 1999-03-04. Small-x one-particle-inclusive quantities in the CCFM approach. https://doi.org/10.1088/1126-6708%2F1998%2F12%2F011

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