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

References in corpus (2)

• Effective Lagrangian Approach to pion photoproduction from the nucleon
• Consistency of the $\pi \Delta$ interaction in chiral perturbation theory

Cited by in corpus (3)

• Relativistic Mean-Field Model with Scaled Hadron Masses and Couplings
• Phantom Higgs from Unparticles
• Thermodynamics of resonances and blurred particles