Resonant active-sterile neutrino mixing in the presence of matter potentials and altered dispersion relations

Abstract

We investigate resonant active-sterile neutrino oscillations emergent from the interplay between matter, CPT- and Lorentz-violating coefficients with different energy dependences. Novel and experimentally accessible resonant neutrino oscillation phenomenologies are predicted and possible implications for observed, but yet unexplained, neutrino oscillation anomalies such as LSND and MiniBooNE are discussed.

Comments: 13 pages, 3 figures; revised version to be resubmitted to PRD, including generalized treatment of CPT violation as well as comment on new MiniBooNE results