6533b7d3fe1ef96bd1260b10
RESEARCH PRODUCT
Light-front transverse charge densities
Barbara PasquiniCédric LorcéMarc Vanderhaeghensubject
QuarkHistoryParticle physicsAngular momentumNuclear TheoryProtonNuclear TheoryHadronFOS: Physical sciences01 natural sciencesEducationNuclear Theory (nucl-th)High Energy Physics - Phenomenology (hep-ph)0103 physical sciencesWigner distribution function010306 general physicsSpin-½Physics010308 nuclear & particles physicsHigh Energy Physics::Phenomenology3. Good healthComputer Science ApplicationsHigh Energy Physics - PhenomenologyTransverse planeQuantum electrodynamicsNucleondescription
We discuss the recent interpretation of quark-distribution functions in the plane transverse to the light-cone direction. Such a mapping is model independent and allows one to build up multidimensional pictures of the hadron and to develop a semi-classical interpretation of the quark dynamics. We comment briefly the results obtained from the form factors of the nucleon. We show that a generalization to a target with arbitrary spin leads to a set of preferred values for the electromagnetic coupling characterizing structureless particles. Finally, we present the Wigner distribution for an unpolarized quark in an unpolarized proton and we propose an interpretation of the observed distortion as due to the orbital angular momentum of the quark.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-12-01 | Journal of Physics: Conference Series |