Complete Relativistic Description of the N*(1520)

Abstract

A relativistic description of spin 3/2 resonances and their decay channels is presented by calculating their selfenergies and spectral functions. The full vector-spinor structure is taken into account. Special emphasis is put on the N*(1520) and its decay channels pi N, rho N and pi Δ. All interactions are formulated such that only the correct number of degrees of freedom of a spin 3/2 state is propagated. The obtained results are compared with several approximations frequently used to avoid the complicated vector-spinor structure. Since this structure is taken fully into account here, the quality of the approximations can be judged.

32 pages, 40 figures

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• Relativistic chiral SU(3) symmetry, large N_c sum rules and meson-baryon scattering
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• Infrared regularization with spin-3/2 fields
• Chiral Lagrangians for Baryons coupled to massive Spin-1 Fields
• Effective Lagrangian Approach to pion photoproduction from the nucleon
• Consistency of the $\pi \Delta$ interaction in chiral perturbation theory
• A Transport Equation for Quantum Fields with Continuous Mass Spectrum
• Dressing the nucleon in a dispersion approach
• Hints on the quadrupole deformation of the $\Delta$(1232)
• QCD sum rules at finite density in the large-N_c limit: The coupling of the rho-nucleon system to the D_{13}(1520)
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Cited by in corpus (6)

• Bethe-Salpeter equation for doubly heavy baryons in the covariant instantaneous approximation
• The associated photoproduction of K+ meson off proton within a coupled-channels K-matrix approach
• Relativistic Mean-Field Model with Scaled Hadron Masses and Couplings
• Phantom Higgs from Unparticles
• Thermodynamics of resonances and blurred particles
• Octet and decuplet contribution to the proton self energy