TY - JOUR
T1 - Nucleons as skyrme solitons with vector mesons
T2 - Electromagnetic and axial properties
AU - Meissner, U. G.
AU - Kaiser, N.
AU - Weise, W.
N1 - Funding Information:
l Work supported in part by Bundesministerium fiir Forschung und Technologie (grant MEP 0234 REA) and by Deutsche Forschungsgemeinschaft (grant We 655/9-l). 1 Present address: Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Mass. 02139, USA.
PY - 1987
Y1 - 1987
N2 - We investigate the electromagnetic and axial currents and corresponding form factors of solitons resulting from a non-linear chiral theory of pions, ρ and ω mesons. The vector mesons are introduced as dynamical gauge bosons of a hidden SU(2) × U(1) symmetry. With only two parameters which are determined completely in the meson sector, we obtain satisfactory results for both the electromagnetic and axial form factors of the nucleon. While the baryon number distribution inside the nucleon has a small size, about 0.5 fm, the electromagnetic radii are substantially larger due to the role of vector mesons and their direct couplings to photons in accordance with vector meson dominance. The nucleon axial form factor is also well reproduced.
AB - We investigate the electromagnetic and axial currents and corresponding form factors of solitons resulting from a non-linear chiral theory of pions, ρ and ω mesons. The vector mesons are introduced as dynamical gauge bosons of a hidden SU(2) × U(1) symmetry. With only two parameters which are determined completely in the meson sector, we obtain satisfactory results for both the electromagnetic and axial form factors of the nucleon. While the baryon number distribution inside the nucleon has a small size, about 0.5 fm, the electromagnetic radii are substantially larger due to the role of vector mesons and their direct couplings to photons in accordance with vector meson dominance. The nucleon axial form factor is also well reproduced.
UR - http://www.scopus.com/inward/record.url?scp=0000429730&partnerID=8YFLogxK
U2 - 10.1016/0375-9474(87)90463-5
DO - 10.1016/0375-9474(87)90463-5
M3 - Article
AN - SCOPUS:0000429730
SN - 0375-9474
VL - 466
SP - 685
EP - 723
JO - Nuclear Physics, Section A
JF - Nuclear Physics, Section A
IS - 3-4
ER -