Factorization model for distributions of quarks in hadrons

  title={Factorization model for distributions of quarks in hadrons},
  author={B. I. Ermolaev and Mario Greco and Serhiy Troyan},
  journal={The European Physical Journal C},
We consider distributions of unpolarized (polarized) quarks in unpolarized (polarized) hadrons. Our approach is based on QCD factorization. We begin with a study of the basic factorization for the parton–hadron scattering amplitudes in the forward kinematics and suggest a model for non-perturbative contributions to such amplitudes. This model is based on this simple observation: after emitting an active quark by the initial hadron, the remaining set of quarks and gluons becomes unstable, so a… 
4 Citations
Model for non-perturbative contributions to the quark distributions
In the present talk we briefly discuss the most general form of QCD Factorization, which we call Basic Factorization, and show how it is related to the conventional forms of factorization:
Non-perturbative inputs for gluon distributions in the hadrons
Description of hadronic reactions at high energies is conventionally done in the framework of QCD factorization. All factorization convolutions comprise non-perturbative inputs mimicking
New approach to non-perturbative inputs for parton distributions in QCD factorization
Description of hadronic reactions at high energies requires knowledge of QCD at both high and low energy scales. As QCD at low-energy scale is poorly known, the straightforward calculations must be
Intrinsic mass scale in QCD factorization
In this paper we argue for existence of an intrinsic mass scale in QCD factorization and present a possible origin of it. Values of this scale are within the Non-Perturbative QCD mass range. It


Fully unintegrated parton correlation functions and factorization in lowest-order hard scattering
Motivated by the need to correct the potentially large kinematic errors in approximations used in the standard formulation of perturbative QCD, we reformulate deeply inelastic lepton-proton
Intrinsic heavy-quark states
The postulate that ordinary hadrons contain intrinsic charm-quark states (such as Vertical Baruudcc-bar> in the proton) at the 1% level is shown to explain two sets of unexpected experimental
Jet and Lepton Pair Production in High-Energy Lepton-Hadron and Hadron-Hadron Scattering
Cross sections for jet and lepton-pair production at large transverse momenta are studied in a class of renormalizable field theories including quantum chromodynamics. To all orders in perturbation
Anomalous magnetic moment and limits on fermion substructure
Experimental constraints on possible lepton and quark substructure are analyzed and expressed in terms of a general formalism for describing composite particles in terms of their constituents. In
Perturbative QCD of hard and soft processes
We discuss some problems concerning the application of perturbative QCD to high energy processes. In particular for hard processes, we analyze higher order and higher twist corrections. It is argued