  The low-energy excesses observed by the MiniBooNE experiment have, to date,
defied a convinc- ing explanation under the standard model even with
accommodation for non-zero neutrino mass. In this paper we explore a new
oscillation mechanism to explain these anomalies, invoking a light neu-
trinophilic Higgs boson, conceived to induce a low Dirac neutrino mass in
accord with experimental limits. Beam neutrinos forward-scattering off of a
locally over-dense relic neutrino background give rise to a novel matter-effect
with an energy-specific resonance. An enhanced oscillation around this
resonance peak produces flavor transitions which are highly consistent with the
MiniBooNE neutrino- and antineutrino-mode data sets. The model provides
substantially improved $\chi^2$ values beyond either the no-oscillation
hypothesis or the more commonly explored 3+1 sterile neutrino hy- pothesis.
This mechanism would introduce distinctive signatures at each baseline in the
upcoming SBN program at Fermilab, presenting opportunities for further
exploration.
