37 citations · 55 across the 3 of their papers we have counts for
4 papers
A Relativistic Model for the Electromagnetic Structure of Baryons from the 3rd Resonance Region
G. Ramalho
We present some predictions for the transition amplitudes, where is the nucleon, and is a nucleon excitation from the third resonance region. Fir…
Improved empirical parametrizations of the transition amplitudes and the Siegert's theorem
G. Ramalho
Some empirical parametrizations of the transition amplitudes violates the Siegert's theorem, that relates the longitudinal and the transverse amplitudes, in…
Rôle of the pion electromagnetic form factor in the timelike transition
G. Ramalho, M. T Pena, J. Weil +2
The magnetic dipole form factor () is described here within a new covariant model that combines the valence quark core together with the pion cloud…
A covariant formalism for the N* electroproduction at high momentum transfer
G. Ramalho, Franz Gross, M. T. Pena +1
A constituent quark model based on the spectator formalism is applied to the gamma N -> N* transition for the three cases, where N* is the nucleon, the Delta and the Roper resonanc…