Realistic Pseudoscalar Vector Chiral Lagrangian and Its Soliton Excitations
Oct, 1987
29 pages
Published in:
- Phys.Rev.D 37 (1988) 3252
Report number:
- MIT-CTP-1532,
- SU-4228-371
Citations per year
Abstract: (APS)
A reasonable low-energy chiral Lagrangian of vectors and pseudoscalars involves three a priori unknown coefficients for terms proportional to the Levi-Civita symbol εμναβ. We argue that these cannot, from a theoretical standpoint, be reliably determined by consideration of electromagnetic processes. Hence we use purely strong-interaction processes which enable us to determine two out of three of these. We examine the nucleon as a soliton excitation in the model and find that adjustment of the third parameter does not greatly change the, in most respects accurate, description of the nucleon obtained in a previous treatment by Meissner, Kaiser, and Weise. The paper includes a new and careful formulation of the addition of electromagnetism to the full Lagrangian.- VECTOR MESON
- PSEUDOSCALAR MESON
- FIELD THEORY: EFFECTIVE LAGRANGIANS
- SYMMETRY: CHIRAL
- NUCLEON: MODEL
- FIELD EQUATIONS: SOLITON
- STRONG INTERACTION
- ELECTROMAGNETIC INTERACTION
- OMEGA(783): HADRONIC DECAY
- HADRONIC DECAY: OMEGA(783)
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