Effective Majorana neutrino decay
  We study the decay of heavy sterile Majorana neutrinos according to the interactions obtained from an effective general theory. We describe the two and three-body decays for a wide range of neutrino masses. The results obtained and presented in this work could be useful for the study of the production and detection of this particles in a variety of high energy physics experiments and astrophysical observations. We show in different figures the dominant branching ratios and the total decay width. 
Luc\'ia Duarte, Ismael Romero, Javier Peressutti and Oscar A. Sampayo
hep-ph