Naturally low scale type I seesaw mechanism and its viability in the 3-3-1 model with right-handed neutrinos

E. Cabrera, D. Cogollo, C. A. de S. Pires

Seesaw mechanisms are the simplest and the most elegant way of generating small masses for the active neutrinos $(m_{\nu })$. In these mechanisms $m_{\nu }$ is inversely proportional to the…