Limitations of small x resummation methods from F2data

Bojak, I. ORCID: https://orcid.org/0000-0003-1765-3502 and Ernst, M. (1997) Limitations of small x resummation methods from F2data. Nuclear Physics B, 508 (3). pp. 731-752. ISSN 0550-3213 doi: 10.1016/S0550-3213(97)00656-1

Abstract/Summary

We discuss several methods of calculating the DIS structure functions F2(x,Q2) based on BFKL-type small x resummations. Taking into account new HERA data ranging down to small xand low Q2, the pure leading order BFKL-based approach is excluded. Other methods based on high energy factorization are closer to conventional renormalization group equations. Despite several difficulties and ambiguities in combining the renormalization group equations with small x resummed terms, we find that a fit to the current data is hardly feasible, since the data in the low Q2 region are not as steep as the BFKL formalism predicts. Thus we conclude that deviations from the (successful) renormalization group approach towards summing up logarithms in 1/x are disfavoured by experiment.

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/32522
Item Type	Article
Refereed	Yes
Divisions	Interdisciplinary Research Centres (IDRCs) > Centre for Integrative Neuroscience and Neurodynamics (CINN)
Uncontrolled Keywords	Small x; F2 structure function; BFKL; kT-factorization; NLO evolution
Publisher	Elsevier
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