Search for muon neutrion disappearance in a short-baseline accelerator neutrino beam

Neutrino oscillations have been observed and confirmed at Δm2 ∼ 10-3 and 10-5 eV2 with various experiments. While oscillations at other mass splittings are prohibited by the current standard model, the LSND experiment observed an excess of electron antineutrinos in a muon antineutrino beam, indicating a possible oscillation at Δm2 ∼ 1 eV2. To test the oscillation at Δm2 ∼ 1 eV2, we search for muon neutrino disappearance using the Fermilab Booster Neutrino beamline and two experiments, SciBooNE and MiniBooNE. The neutrino fluxes are measured in the SciBooNE and MiniBooNE detectors, located at 100 m and 540 m downstream from the neutrino production target, respectively. We collected beam data from June 2007 through August 2008 with SciBooNE, and over a five year period with MiniBooNE. A preliminary sensitivity for a joint vμ disappearance search is presented.