Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2006-11-22
Phys.Rev.C75:025202,2007
Physics
Nuclear Physics
Nuclear Theory
21 pages, 9 figures, REVTeX4
Scientific paper
10.1103/PhysRevC.75.025202
We calculate the nucleon form factors G_A and G_P of the isovector axial-vector current and the pion-nucleon form factor G_piN in manifestly Lorentz-invariant baryon chiral perturbation theory up to and including order O(p^4). In addition to the standard treatment including the nucleon and pions, we also consider the axial-vector meson a_1 as an explicit degree of freedom. This is achieved by using the reformulated infrared renormalization scheme. We find that the inclusion of the axial-vector meson effectively results in one additional low-energy coupling constant that we determine by a fit to the data for G_A. The inclusion of the axial-vector meson results in an improved description of the experimental data for G_A, while the contribution to G_P is small.
Fuchs Thomas
Gegelia Jambul
Scherer Siegfried
Schindler Matthias R.
No associations
LandOfFree
Axial, induced pseudoscalar, and pion-nucleon form factors in manifestly Lorentz-invariant chiral perturbation theory 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 Axial, induced pseudoscalar, and pion-nucleon form factors in manifestly Lorentz-invariant chiral perturbation theory, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Axial, induced pseudoscalar, and pion-nucleon form factors in manifestly Lorentz-invariant chiral perturbation theory will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-369080