Back-to-back pair correlation of Majorana neutrinos with transit   magnetic moments
  The pair production of Majorana neutrinos with transit magnetic moments from the annihilation of charged particles in colliding experiments is discussed using the Pauli interaction, through which the neutral neutrinos but with magnetic moments can be probed by photon. The pair of neutrinos with different flavors are produced due to the transit magnetic moment coupling. We discuss the correlations of flavors in pairs produced back-to-back in the center of mass frame, where the angular distribution peaks at $\theta=\pi/2$ with respect to the beam direction. We demonstrate that the flavor mixing angle can be inferred by measuring the flavor correlation in pairs. 
Hyun Kyu Lee
hep-ph