A Measurement Of The Muon Neutrino Charged Current Quasielastic Interaction And A Test Of Lorentz Violation With The Miniboone Experiment

Abstract

The Mini-Booster neutrino experiment (MiniBooNE)

at Fermi National Accelerator Laboratory (Fermilab)

is designed to search for

νμ–νe

appearance neutrino oscillations.

Muon neutrino charged-current quasi-elastic (CCQE) interactions

(νμ+n→μ+p)

make up roughly 40% of our data sample,

and it is used to constrain the

background and cross sections for the oscillation analysis.

Using high–statistics MiniBooNE CCQE data,

the muon-neutrino CCQE cross section is measured.

The nuclear model is tuned precisely using the MiniBooNE data.

The measured total cross section is

σ=(1.058±0.003(stat)±0.111(syst))

&times;10<super>-38</super> cm<super>2</super>

at the MiniBooNE muon neutrino beam energy (700&ndash;800 MeV).

&nu;e appearance candidate data is also used to search for Lorentz violation.

Lorentz symmetry is one of the most fundamental

symmetries in modern physics. Neutrino oscillations offer a new method to test it.

We found that the MiniBooNE result is not well-described using Lorentz violation,

however further investigation is required for a more conclusive result.