Neutrino Oscillations at Accelerators

Abstract

Hints of physics beyond the Standard Model come from solar¹ and atmospheric²neutrino experiments, where apparent deficits are interpreted as signs of oscillations, and also from the claim of the LSND experiment,³where a signal of ${\bar v_e}$ is observed in a beam which does not contain this flavour at production. Figure 1 shows the preferred regions corresponding to these three ‘evidences’. They do not necessarily apply to the same physical oscillation channel.