[Jlab-seminars] Theory Center Seminar

[Mary Fox]

Theory Center Seminar
Monday, Feb 22, 2016
1:00 p.m. (coffee at 12:45 p.m.)
CEBAF Center, Room L102

Herve Moutarde
CEA Saclay

*Lorentz Covariance and Positivity Constraints in the Modeling of 
Generalized Parton Distributions*

The concept of Generalized Parton Distributions promises an 
understanding of the generation of the charge, spin,
and energy-momentum structure of hadrons by their fundamental 
constituents, quarks and gluons. Forthcoming
measurements with unprecedented accuracy at Jefferson Lab will 
presumably challenge our quantitative description
of the three-dimensional structure of hadrons. To fully exploit these 
future experimental data, new tools and models
are currently being developed. We will explain the difficulties of 
Generalized Parton Distribution modeling, and present
some recent progress. In particular we will discuss various equivalent 
parameterizations and sketch how to combine
them to obtain models satisfying a priori all required theoretical 
constraints. We will explain why these developments
naturally fit in a versatile software platform, named PARTONS, dedicated 
to the phenomenology of GPDs.
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