Improved Neutrino Oscillations Analysis of the MiniBooNE Data.

Aguilar-Arevalo, A. A.

Technical Information Center Oak Ridge Tennessee

关键词: Neutrino oscillation;    Neutrinos;    Energy spectra;    Oscillations;    Particle identification;   

RP-ID  :  DE2008923528

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

We calculate the exclusion region in the parameter space of (nu)(sub (mu)) (yields) (nu)(sub e) oscillations of the LSND type using a combined fit to the reconstructed energy distributions of neutrino candidate samples from the MiniBooNE data obtained with two different particle identification methods. The two (nu)(sub e) candidate samples are included together with a high statistics sample of (nu)(sub (mu)) events in the definition of a (chi)(sup 2) statistic which includes the correlations between the energy intervals of all three samples and handles the event overlap between the (nu)(sub e) samples. The (nu)(sub (mu)) sample is introduced to constrain the effect of systematic uncertainties. This analysis increases the exclusion limit in the region (Delta)m(sup 2) (approx)< 1eV(sup 2) when compared with the result previously published by the collaboration, which used a different technique.