1104.2384 (R. J. Hernandez-Pinto et al.)

A gauge model for right handed neutrinos as dark matter    [PDF]

R. J. Hernandez-Pinto, A. Perez-Lorenzana

$B-L$ is known to be a symmetry somewhat linked to the origin of neutrino
masses, which turns out to be anomaly free upon the sole introduction of right
handed neutrinos. We suggest a simple extension of the electroweak group,
$SU(2)_L\times U(1)_Y\times U(1)_{B-L}$, where the breaking of $U(1)_{B-L}$
symmetry provides masses for right handed neutrinos at an acceptable range for
them to be Dark Matter candidates. We review the cosmological constraints for
this type of models, in order to find the restrictions on the parameters of the
model. We study the contributions due to the $B-L$ current in the process
$e^+e^- \rightarrow e^+e^-$ at low energies.

View original: http://arxiv.org/abs/1104.2384