Lorentz covariant orbitalspin scheme for the effective N^{*}NM couplings
Abstract
For excited nucleon states N^{*} of arbitrary spin coupling to nucleon (N) and meson (M), we propose a Lorentz covariant orbitalspin (LS) scheme for the effective N^{*}NM couplings. To be used for the partial wave analysis of various N^{*} production and decay processes, it combines merits of two conventional schemes, i.e., covariant effective Lagrangian approach and multipole analysis with amplitudes expanded according to angular momentum L. As examples, explicit formulas are given for N^{*}→Nπ, N^{*}→Nω, and ψ→N^{*}N̄ processes which are under current experimental studies.
 Publication:

Physical Review C
 Pub Date:
 January 2003
 DOI:
 10.1103/PhysRevC.67.015204
 arXiv:
 arXiv:hepph/0210164
 Bibcode:
 2003PhRvC..67a5204Z
 Keywords:

 14.20.Gk;
 11.80.Et;
 13.30.Eg;
 13.75.n;
 Baryon resonances with S=0;
 Partialwave analysis;
 Hadronic decays;
 Hadroninduced low and intermediateenergy reactions and scattering;
 High Energy Physics  Phenomenology
 EPrint:
 Postscript file, 14 pages