Towards small-$x$ resummed parton distribution functions
Abstract
We present preliminary results for fits of parton distribution functions (PDFs) which include the resummation of small- logarithms at NLLx accuracy, performed in the NNPDF framework. We observe an improvement in the description of DIS data at small values of Bjorken when resummation effects are included. The improvement is more marked when comparing NNLO+NLLx fits to NNLO ones, and is particularly noticeable for small- and small- HERA inclusive structure functions. The main effect of the resummation is an enhancement of the gluon and singlet PDFs at small-, which persists at high scales.
Keywords
Cite
@article{arxiv.1707.01535,
title = {Towards small-$x$ resummed parton distribution functions},
author = {Luca Rottoli and Marco Bonvini},
journal= {arXiv preprint arXiv:1707.01535},
year = {2017}
}
Comments
6 pages, 2 figures. To appear in the proceedings of the XXV International Workshop on Deep-Inelastic Scattering and Related Subjects, 3-7 April 2017, University of Birmingham, UK