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nucl-th2005
Neutral and charged pion production in the S-matrix approach
V. Malafaia, M. T. Pena, J. Adam
The S-matrix approach is applied to charged and neutral pion production in pp collisions, in which the spin/isospin channels filter differently the rescattering mechanism. The chir…
nucl-th2004
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…
nucl-th2003
Pion re-scattering in pi0 production near threshold
V. Malafaia, M. T. Pena
We compare the most used approximations to calculate the contribution from pion re-scattering mechanisms to pion production from proton-proton scattering, near threshold. Our calcu…