Searching for Physics beyond the Standard Model with Accelerator Neutrino Experiments
- Los Alamos National Laboratory
The MiniBooNE experiment at Fermilab was designed to test the LSND evidence for {bar {nu}}{sub {mu}} {yields} {bar {nu}}{sub e} oscillations . The first MiniBooNE oscillation result in neutrino mode shows no significant excess of events at higher energies (E{sub {nu}} > 475 MeV), although a sizeable excess is observed at lower energies (E{sub {nu}}< 475 MeV). The lack of a significant excess at higher energies allows MiniBooNE to rule out simple 2 - {nu} oscillations as an explanation of the LSND signal. However, the low-energy excess is presently unexplained. Additional antineutrino data and NuMI data may allow the collaboration to determine whether the excess is due, for example, to a neutrino neutral-current radiative interaction or to neutrino oscillations involving sterile neutrinos. If the excess is consistent with being due to sterile neutrinos, then future experiments at FNAL (BooNE) or ORNL (OscSNS) could prove their existence.
- Research Organization:
- Los Alamos National Laboratory (LANL)
- Sponsoring Organization:
- DOE
- DOE Contract Number:
- AC52-06NA25396
- OSTI ID:
- 957774
- Report Number(s):
- LA-UR-08-04585; LA-UR-08-4585
- Country of Publication:
- United States
- Language:
- English
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