Partial wave decomposition of pion and photoproduction amplitudes

Jul, 2004
18 pages
Published in:
  • Eur.Phys.J.A 24 (2005) 111-128
e-Print:

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Abstract:
Partial wave amplitudes for production and decay of baryon resonances are constructed in the framework of the operator expansion method. The approach is fully relativistically invariant and allow us to perform combined analyses of different reactions imposing directly analyticity and unitarity constraints. All formulas are given explicitly in the form used by the Crystal Barrel collaboration in the (partly forthcoming) analyses of the electro-, photo- and pion induced meson production data.
Note:
  • 18 pages, 5 figures
  • photon nucleon: inelastic scattering
  • pi nucleon: inelastic scattering
  • baryon resonance: photoproduction
  • baryon resonance: hadroproduction
  • baryon resonance: hadronic decay
  • partial wave analysis
  • operator product expansion
  • angular momentum
  • fermion: propagator
  • meson: photoproduction