scholarly journals Violation of sum rules for twist-3 parton distributions in QCD

2002 ◽  
Vol 632 (1-3) ◽  
pp. 311-329 ◽  
Author(s):  
Matthias Burkardt ◽  
Yuji Koike
Keyword(s):  
Sum Rules ◽  
Parton Distributions

scholarly journals Complex moments of parton distributions and new sum rules

1987 ◽  
Vol 59 (18) ◽  
pp. 2009-2011 ◽  
Author(s):  
C. Bourrely ◽  
J. Soffer ◽  
Tai Tsun Wu
Keyword(s):  
Sum Rules ◽  
Parton Distributions

scholarly journals SINGULARITIES OF GENERALIZED PARTON DISTRIBUTIONS

2012 ◽  
Vol 20 ◽  
pp. 251-265 ◽  
Author(s):  
ANATOLY V. RADYUSHKIN
Keyword(s):  
Sum Rules ◽  
Careful Analysis ◽  
Renormalization Procedure ◽  
Parton Distributions ◽  
Singularity Structure ◽  
Regge Behavior ◽  
Generalized Parton Distributions ◽  
Building Models ◽  
Analytic Regularization ◽  
Recent Developments

We discuss recent developments in building models for GPDs that are based on the formalism of double distributions (DDs). A special attention is given to a careful analysis of the singularity structure of DDs. The DD formalism is applied to construction of a model GPDs with a singular Regge behavior. Within the developed DD-based approach, we discuss the structure of GPD sum rules. It is shown that separation of DDs into the so-called "plus" part and the D-term part may be treated as a renormalization procedure for the GPD sum rules. This approach is compared with an alternative prescription based on analytic regularization.

PARTON DISTRIBUTIONS IN THE NUCLEON AND THE PAULI PRINCIPLE

1993 ◽  
Vol 08 (03) ◽  
pp. 225-231 ◽  
Author(s):  
FRANCO BUCCELLA ◽  
JACQUES SOFFER
Keyword(s):  
Inelastic Scattering ◽  
Deep Inelastic Scattering ◽  
Sum Rules ◽  
Pauli Principle ◽  
Scattering Data ◽  
Parton Distributions ◽  
Sum Rule ◽  
Bjorken Sum Rule ◽  
Deep Inelastic Scattering Data

The Pauli principle is used, together with some deep inelastic scattering data, to guide us in making reasonable assumptions for various polarized parton distributions in terms of unpolarized distributions. We relate the violation of the Gottfried and Ellis-Jaffe sum rules and we anticipate a substantial violation of the Bjorken sum rule.

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