224 citations · 1.6k across the 72 of their papers we have counts for
4 papers · 2 filters
Timelike gamma* N -> Delta form factors and Delta Dalitz decay
G. Ramalho, M. T. Pena
We extend a covariant model, tested before in the spacelike region for the physical and lattice QCD regimes, to a calculation of the gamma* N -> Delta reaction in the timelike regi…
Leptogenesis with small violation of B-L
J. Racker, Manuel Peña, Nuria Rius
We analyze leptogenesis in the context of seesaw models with almost conserved lepton number, focusing on the L-conserving contribution to the flavoured CP asymmetries. We find that…
Spin and angular momentum in the nucleon
Franz Gross, G. Ramalho, M. T. Pena
Using the covariant spectator theory (CST), we present the results of a valence quark-diquark model calculation of the nucleon structure function f(x) measured in unpolarized deep…
Covariant nucleon wave function with S, D, and P-state components
Franz Gross, G. Ramalho, M. T. Pena
Expressions for the nucleon wave functions in the covariant spectator theory (CST) are derived. The nucleon is described as a system with a off-mass-shell constituent quark, free t…