BEST sensitivity to O(1) eV sterile neutrino
  Numerous anomalous results in neutrino oscillation experiments can be
attributed to interference of ~1 eV sterile neutrino. The specially designed to
fully explore the Gallium anomaly Baksan Experiment on Sterile Transitions
(BEST) starts next year. We investigate the sensitivity of BEST in searches for
sterile neutrino mixed with electron neutrino. Then, performing the combined
analysis of all the Gallium experiments (SAGE, GALLEX, BEST) we find the
regions in model parameter space (sterile neutrino mass and mixing angle),
which will be excluded if BEST agrees with no sterile neutrino hypothesis. For
the opposite case, if BEST observes the signal as it follows from the sterile
neutrino explanation of the Gallium (SAGE and GALLEX) anomaly, we show how BEST
will improve upon the present estimates of the model parameters.
