  We propose an explanation for the LSND anomaly based on quantum decoherence,
postulating an exponential behavior for the decoherence parameters as a
function of the neutrino energy. Within this ansatz decoherence effects are
suppressed for neutrino energies above 200 MeV as well as around and below few
MeV, restricting deviations from standard three-flavour oscillations only to
the LSND energy range of 20--50 MeV. The scenario is consistent with the global
data on neutrino oscillations, alleviates the tension between LSND and KARMEN,
and predicts a null-result for MiniBooNE. No sterile neutrinos are introduced,
conflict with cosmology is avoided, and no tension between short-baseline
appearance and disappearance data arises. The proposal can be tested at planned
reactor experiments with baselines of around 50 km, such as JUNO or RENO-50.
