scholarly journals PROBING THE PARTON CONTENT OF THE NUCLEON

2009 ◽  
Vol 24 (35n37) ◽  
pp. 2882-2892 ◽  
Author(s):  
SIGFRIDO BOFFI ◽  
BARBARA PASQUINI
Keyword(s):  
Light Cone ◽  
Cloud Model ◽  
Form Factors ◽  
Wave Functions ◽  
Electromagnetic Form Factors ◽  
Transition Distribution ◽  
Meson Cloud

The parton content of the nucleon is explored within a meson-cloud model developed to derive light-cone wave functions for the physical nucleon. The model is here applied to study electromagnetic form factors, distribution amplitudes and nucleon-to-meson transition distribution amplitudes.

scholarly journals Electromagnetic transition form factors of baryons in a relativistic Faddeev approach

2018 ◽  
Vol 181 ◽  
pp. 01013 ◽  
Author(s):  
Reinhard Alkofer ◽  
Christian S. Fischer ◽  
Hèlios Sanchis-Alepuz
Keyword(s):  
Ground State ◽  
Bound States ◽  
Body Wave ◽  
Form Factors ◽  
Wave Functions ◽  
Electromagnetic Form Factors ◽  
Transition Form ◽  
Electromagnetic Transition ◽  
Three Body ◽  
Gluon Interaction

The covariant Faddeev approach which describes baryons as relativistic three-quark bound states and is based on the Dyson-Schwinger and Bethe-Salpeter equations of QCD is briefly reviewed. All elements, including especially the baryons’ three-body-wave-functions, the quark propagators and the dressed quark-photon vertex, are calculated from a well-established approximation for the quark-gluon interaction. Selected previous results of this approach for the spectrum and elastic electromagnetic form factors of ground-state baryons and resonances are reported. The main focus of this talk is a presentation and discussion of results from a recent investigation of the electromagnetic transition form factors between ground-state octet and decuplet baryons as well as the octet-only Σ0 to Λ transition.

THE SCALAR κ MESON CONTRIBUTION TO THE NUCLEON STRANGENESS

2007 ◽  
Vol 16 (09) ◽  
pp. 2880-2883
Author(s):  
F. CARVALHO ◽  
D. M. T. LEITE ◽  
F. S. NAVARRA ◽  
M. NIELSEN
Keyword(s):  
Cloud Model ◽  
Form Factors ◽  
Meson Cloud ◽  
Strangeness Content ◽  
Magnetic Form Factors

The strangeness content of the nucleon electric and magnetic form factors is analyzed in a version of the meson cloud model, including the kaon and the scalar κ mesons. We compare our results with the recent measurements performed at TJNAF.

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