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From quarks and gluons to baryon form factors

I briefly summarize recent results for nucleon and [Formula: see text] electromagnetic, axial and transition form factors in the Dyson–Schwinger approach. The calculation of the current diagrams from the quark–gluon level enables a transparent discussion of common features such as: the implications...

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Detalles Bibliográficos
Autor principal: Eichmann, Gernot
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier B.V 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4699638/
https://www.ncbi.nlm.nih.gov/pubmed/26766879
http://dx.doi.org/10.1016/j.ppnp.2011.12.024
Descripción
Sumario:I briefly summarize recent results for nucleon and [Formula: see text] electromagnetic, axial and transition form factors in the Dyson–Schwinger approach. The calculation of the current diagrams from the quark–gluon level enables a transparent discussion of common features such as: the implications of dynamical chiral symmetry breaking and quark orbital angular momentum, the timelike structure of the form factors, and their interpretation in terms of missing pion-cloud effects.