Distinguishing between Dirac and Majorana neutrinos with two-particle   interferometry
  Two-particle interferometry, a second-order interference effect, is explored as another possible tool to distinguish between massive Dirac and Majorana neutrinos. A simple theoretical framework is discussed in the context of several gedanken experiments. The method can in principle provide both the mass scale and the quantum nature of the neutrino for a certain class of incoherent left-handed source currents. 
Thomas D. Gutierrez (LBL, Berkeley)