TY - JOUR
T1 - Chiral bag with vector mesons
AU - Hosaka, A.
AU - Toki, H.
AU - Weise, W.
N1 - Funding Information:
l Work supported in part by BMFT grants MEP 0234 REA, 06 OR 762 and by DFG grant We 655/9-2. ’ Research fellow of the Alexander von Humboldt Foundation. Present address: Department of Physics, University of Pennsylvania, Philadelphia, PA 19104, USA. ’ Permanent address: Department of Physics, Tokyo Metroplitan University, Setagaya, Tokyo 158, Japan.
PY - 1990
Y1 - 1990
N2 - We investigate nucleon structure in a (non-linear) chiral bag model with vector mesons. The model incorporates two different degrees of freedom: mesons outside the bag at long and intermediate ranges, and quarks inside the bag at short distances. The ρ, a1 and ω mesons outside the bag are included in a chiral effective lagrangian based on the non-linear sigma model. The classical solution is obtained using the hedgehog ansatz, and the cranking method is applied to construct the physical nucleon states. Static properties of the nucleon such as its mass, axial vector coupling constant, magnetic moments and charge radii are studied in detail as functions of the bag radius. Quark and meson contributions to these quantities are calculated separately. In particular, we discuss the extent to which the vector-meson dominance picture holds in the chiral bag.
AB - We investigate nucleon structure in a (non-linear) chiral bag model with vector mesons. The model incorporates two different degrees of freedom: mesons outside the bag at long and intermediate ranges, and quarks inside the bag at short distances. The ρ, a1 and ω mesons outside the bag are included in a chiral effective lagrangian based on the non-linear sigma model. The classical solution is obtained using the hedgehog ansatz, and the cranking method is applied to construct the physical nucleon states. Static properties of the nucleon such as its mass, axial vector coupling constant, magnetic moments and charge radii are studied in detail as functions of the bag radius. Quark and meson contributions to these quantities are calculated separately. In particular, we discuss the extent to which the vector-meson dominance picture holds in the chiral bag.
UR - https://www.scopus.com/pages/publications/0000020451
U2 - 10.1016/0375-9474(90)90200-6
DO - 10.1016/0375-9474(90)90200-6
M3 - Article
AN - SCOPUS:0000020451
SN - 0375-9474
VL - 506
SP - 501
EP - 531
JO - Nuclear Physics, Section A
JF - Nuclear Physics, Section A
IS - 3-4
ER -