Speaker
Jacques Soffer
(Temple University, Philadelphia, PA, USA)
Description
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,in particular the behavior of $\bar d /\bar u$ at large $x$, a possible large positive gluon helicity distribution, etc . The predictions of this theoretical approach will be tested for single-jet production and charge asymmetry
in $W^{\pm}$ production in $\bar p p$ and $p p$ collisions up to LHC energies, using recent data and also for forthcoming experimental results.
Primary author
Jacques Soffer
(Temple University, Philadelphia, PA, USA)
