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

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}{sup -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.
 [1] ;  [1]
  1. JLAB Newport News, VA (United States)
Publication Date:
OSTI Identifier:
Report Number(s):
JLAB-THY--13-1807; DOE/OR--23177-2788
Journal ID: ISSN 2010-1945; arXiv:1310.0739; TRN: US1400153
DOE Contract Number:
Resource Type:
Resource Relation:
Journal Name: International Journal of Modern Physics: Conference Series; Journal Volume: 25; Conference: QCD Evolution 2013, Newport News, VA (United States), 6-10 May 2013
World Scientific
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC) (United States)
Country of Publication:
United States
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS Generalized parton distributions, transverse charge and magnetization densities, chiral effective field theory, light–front quantization