Unsterile-Active Neutrino Mixing: Consequences on Radiative Decay and Bounds from the X-ray Background

D. Boyanovsky, R. Holman, Jimmy A. Hutasoit

We consider a sterile neutrino to be an unparticle, namely an \emph{unsterile neutrino}, with anomalous dimension $\eta$ and study its mixing with a canonical active neutrino via a se…