Abstract
The LSND Collaboration reported a 3.8σ excess of \(\bar v_e \) over background. In this experiment 800MeV protons were dumped into a water target. LSND experimentalists interpreted this excess as evidence for \(\bar v_\mu \to \bar v_e \) oscillations, which led to the hypothesis of the existence of ‘sterile’ neutrinos. LSND’s claim was not confirmed by the MiniBooNE Collaboration, so the origins of the LSND result were never clarified. The data from the HARP-CDP group on pion production by 800 MeV protons are used in an independent calculation of LSND’s \(\bar v_e \) background. The pion production by neutrons which had been ignored in LSND’s calculations is also taken into account. We conclude that LSND’s claim of a 3.8 σ excess cannot be upheld.
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