期刊
NUCLEAR PHYSICS A
卷 941, 期 -, 页码 307-334出版社
ELSEVIER
DOI: 10.1016/j.nuclphysa.2015.06.018
关键词
Deep inelastic scattering; Statistical distributions; Helicity asymmetries
The quantum statistical parton distributions approach proposed more than one decade ago is revisited by considering a larger set of recent and accurate Deep Inelastic Scattering experimental results. It enables us to improve the description of the data by means of a new determination of the parton distributions. This global next-to-leading order QCD analysis leads to a good description of several structure functions, involving unpolarized parton distributions and helicity distributions, in a broad range of x and Q(2) and in terms of a rather small number of free parameters. There are several challenging issues and in particular the confirmation of a large positive gluon helicity distribution. The predictions of this theoretical approach will be tested for single-jet production and charge asymmetry in W-+/- production in (p) over barp and pp collisions up to LHC energies, using recent data and also for forthcoming experimental results. (C) 2015 Elsevier B.V. All rights reserved.
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