Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-09-18
Eur.Phys.J.C23:487-501,2002
Physics
High Energy Physics
High Energy Physics - Phenomenology
49 pages, 27 eps figures
Scientific paper
10.1007/s100520100855
A global next-to-leading order QCD analysis of unpolarized and polarized deep-inelastic scattering data is performed with parton distributions constructed in a statistical physical picture of the nucleon. The chiral properties of QCD lead to strong relations between quarks and antiquarks distributions and the importance of the Pauli exclusion principle is also emphasized. We obtain a good description, in a broad range of $x$ and $Q^2$, of all measured structure functions in terms of very few free parameters. We stress the fact that at RHIC-BNL the ratio of the unpolarized cross sections for the production of $W^+$ and $W^-$ in $pp$ collisions, will directly probe the behavior of the $\bar d(x) / \bar u(x)$ ratio for $x \geq 0.2$, a definite and important test for the statistical model. Finally, we give specific predictions for various helicity asymmetries for the $W^{\pm}, Z$ production in $pp$ collisions at high energies, which will be measured with forthcoming experiments at RHIC-BNL and are sensitive tests of the statistical model for $\Delta \bar u(x)$ and $\Delta \bar d(x)$.
Bourrely Claude
Buccella Franco
Soffer Jacques
No associations
LandOfFree
A statistical approach for polarized parton distributions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A statistical approach for polarized parton distributions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A statistical approach for polarized parton distributions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-424967