Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2011-03-10
Phys.Rev.C83:065502,2011
Physics
Nuclear Physics
Nuclear Theory
10 pages, 9 figures
Scientific paper
10.1103/PhysRevC.83.065502
A field-theory-based approach to pion photoproduction off the nucleon is used to derive a microscopically consistent formulation of the fully dressed electromagnetic nucleon current in an effective Lagrangian formalism. It is shown how the rigorous implementation of local gauge invariance at all levels of the reaction dynamics provides equations that lend themselves to practically manageable truncations of the underlying nonlinearities of the problem. The requirement of consistency also suggests a novel way of treating the pion photoproduction problem. Guided by a phenomenological implementation of gauge invariance for the truncated equations that has proved successful for pion photoproduction, an expression for the fully dressed nucleon current is given that satisfies the Ward-Takahashi identity for a fully dressed nucleon propagator as a matter of course. Possible applications include meson photo- and electroproduction processes, bremsstrahlung, Compton scattering, and $ee'$ processes off nucleons.
Haberzettl Helmut
Huang Fang
Nakayama Kazunori
No associations
LandOfFree
Dressing the electromagnetic nucleon current does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Dressing the electromagnetic nucleon current, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dressing the electromagnetic nucleon current will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-631660