Gluon and quark distributions in large N_c QCD: theory vs. phenomenology

Abstract

We present the QCD analysis of the behavior of quark and gluon distributions in the limit of a large number of colors N_c. We show that the results agree qualitatively with the phenomenological data. In particular we draw attention to the fact that the polarized gluon distribution is suppressed at large N_c compared to the unpolarized one.

8 pages, v.2: references added

References in corpus (4)

• Measurement of the Spin Asymmetry in the Photoproduction of Pairs of High-pT Hadrons at HERMES
• Phenomenology of single spin asymmetries in p(transv. polarized)-p -> pion + X
• On the azimuthal asymmetries in DIS
• A New Study of the Polarized Parton Densities in the Nucleon

Cited by in corpus (13)

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• The generalized parton distribution function (E^u+E^d)(x,xi,t) of the nucleon in the chiral quark soliton model
• The pion mass dependence of the nucleon form-factors of the energy momentum tensor in the chiral quark-soliton model
• The chirally-odd twist-3 distribution e(x)
• Transversity and T-odd PDFs from Drell-Yan processes with $pp$, $pD$ and $DD$ collisions
• Flavor structure of the unpolarized and longitudinally-polarized sea-quark distributions in the nucleon
• Spin-flavor structure of chiral-odd GPDs in the large-N_c limit
• Transversity distribution in spin asymmetries in semi-inclusive DIS and in the Drell-Yan process
• Transversity in the chiral quark--soliton model and single spin asymmetries
• Old and new parton distribution and fragmentation functions
• Sivers effect in semi-inclusive DIS and in the Drell-Yan process