Gallium and Reactor Neutrino Anomalies

The observed deficit in the Gallium radioactive source experiments may be interpreted as a possible indication of active-sterile νe mixing. In the effective framework of two-neutrino mixing we obtain sin22ϑ≳0.03 and Δm2≳0.1 eV2. The compatibility of this result with the data of the Bugey reactor View the MathML source disappearance experiments is studied. It is found that the Bugey data present a hint of neutrino oscillations with 0.02≲sin22ϑ≲0.08 and Δm2≈1.8 eV2, which is compatible with the Gallium allowed region of the mixing parameters. This hint persists in the combined analysis of Gallium, Bugey, and Chooz data.