Test of Lorentz and CPT violation with MiniBooNE excesses

Teppei Katori, Massachusetts Institute of Technology

Lorentz and CPT violation is a predicted signal from Planck scale
physics.  Since neutrino oscillations are natural interferometers,
they are sensitive to small space time properties.  The sensitivity is
comparable with precision optical measurements (<10E-19 GeV).  Thus,
neutrino oscillations may be the first place to see Lorentz and CPT
violation and neutrino oscillation data may exhibit the modulation
with function of sidereal time.

Recently the MiniBooNE neutrino oscillation experiment published the
electron and anti-electron neutrino appearance oscillation results.
An excess is observed in both data sets and it cannot be understood
within the neutrino Standard Model (nuSM).  However, the excess is a
type of signal predicted by Lorentz violation.  In the case that the
excess is Lorentz violation, the oscillation data may exhibit sidereal
time dependent variations.  In this talk, I will introduce Lorentz
violation and Lorentz violating neutrino oscillations.  Then, I will
describe the Lorentz and CPT violation analysis in MiniBooNE.