169 citations · 285 across the 12 of their papers we have counts for
12 papers
Heavy baryon spectroscopy in a quark-diquark approach
A. Torcato, A. Arriaga, G. Eichmann +1
We report progress on calculations of the heavy-light baryons and and their excitations with using functional methods. We employ a covariant quark-diquark…
Many-body effects in (p,pN) reactions within a unified approach
R. Crespo, A. Arriaga, R. B. Wiringa +3
We study knockout reactions with proton probes within a theoretical framework where {\it ab initio} Quantum Monte Carlo wave functions are combined with the Faddeev/Alt-Grassberger…
A relativistic calculation of the deuteron threshold electrodisintegration at backward angles
A. Arriaga, R. Schiavilla
The threshold electrodisintegration of the deuteron at backward angles is studied with a relativistic Hamiltonian, including a relativistic one-pion-exchange potential (OPEP) with…
Relativistic NN scattering without partial wave decomposition
G. Ramalho, A. Arriaga, M. T. Pena
We consider the covariant Spectator equation with a One Boson Exchange (OBE) kernel, and apply it to the NN system. Relativistic effects such as retardation and negative-energy sta…
Quadratic momentum dependence in the nucleon-nucleon interaction
R. B. Wiringa, A. Arriaga, V. R. Pandharipande
We investigate different choices for the quadratic momentum dependence required in nucleon-nucleon potentials to fit phase shifts in high partial-waves. In the Argonne v18 potentia…
Relativistic effects and quasipotential equations
G. Ramalho, A. Arriaga, M. T. Peña
We compare the scattering amplitude resulting from the several quasipotential equations for scalar particles. We consider the Blankenbecler-Sugar, Spectator, Thompson, Erkelenz-Hol…