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arXiv · 1310.0739

Transverse charge and magnetization densities in the nucleon's chiral periphery

C. Granados·C. Weiss
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Abstract

In the light-front description of nucleon structure the electromagnetic form factors are expressed in terms of frame-independent transverse densities of charge and magnetization. Recent work has studied the transverse densities at peripheral distances b = O(M_pi^{-1}), where they are governed by universal chiral dynamics and can be computed in a model-independent manner. Of particular interest is the comparison of the peripheral charge and magnetization densities. We summarize (a) their interpretation as spin-independent and -dependent current matrix elements; (b) the leading-order chiral effective field theory results; (c) their mechanical interpretation in the light-front formulation; (d) the large-N_c limit of QCD and the role of Delta intermediate states; (e) the connection with generalized parton distributions and peripheral high-energy scattering processes.

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C. Granados, C. Weiss. 2013-10-02. Transverse charge and magnetization densities in the nucleon's chiral periphery. https://doi.org/10.1142/s2010194514600362

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