Test of Lorentz and CPT violation with Short Baseline Neutrino Oscillation Excesses
Abstract
The sidereal time dependence of MiniBooNE electron neutrino and anti-electron neutrino appearance data are analyzed to search for evidence of Lorentz and CPT violation. An unbinned Kolmogorov-Smirnov test shows both the electron neutrino and anti-electron neutrino appearance data are compatible with the null sidereal variation hypothesis to more than 5%. Using an unbinned likelihood fit with a Lorentz-violating oscillation model derived from the Standard Model Extension (SME) to describe any excess events over background, we find that the electron neutrino appearance data prefer a sidereal time-independent solution, and the anti-electron neutrino appearance data slightly prefer a sidereal time-dependent solution. Limits of order 10E-20 GeV are placed on combinations of SME coefficients. These limits give the best limits on certain SME coefficients for muon neutrino to electron neutrino and anti-muon neutrino to anti-electron neutrino oscillations. The fit values and limits of combinations of SME coefficients are provided.
Keywords
Cite
@article{arxiv.1109.3480,
title = {Test of Lorentz and CPT violation with Short Baseline Neutrino Oscillation Excesses},
author = {The MiniBooNE Collaboration and A. A. Aguilar-Arevalo and C. E. Anderson and A. O. Bazarko and S. J. Brice and B. C. Brown and L. Bugel and J. Cao and L. Coney and J. M. Conrad and D. C. Cox and A. Curioni and R. Dharmapalan and Z. Djurcic and D. A. Finley and B. T. Fleming and R. Ford and F. G. Garcia and G. T. Garvey and J. Grange and C. Green and J. A. Green and T. L. Hart and E. Hawker and W. Huelsnitz and R. Imlay and R. A. Johnson and G. Karagiorgi and P. Kasper and T. Katori and T. Kobilarcik and I. Kourbanis and S. Koutsoliotas and E. M. Laird and S. K. Linden and J. M. Link and Y. Liu and Y. Liu and W. C. Louis and K. B. M. Mahn and W. Marsh and C. Mauger and V. T. McGary and G. McGregor and W. Metcalf and P. D. Meyers and F. Mills and G. B. Mills and J. Monroe and C. D. Moore and J. Mousseau and R. H. Nelson and P. Nienaber and J. A. Nowak and B. Osmanov and S. Ouedraogo and R. B. Patterson and Z. Pavlovic and D. Perevalov and C. C. Polly and E. Prebys and J. L. Raaf and H. Ray and B. P. Roe and A. D. Russell and V. Sandberg and R. Schirato and D. Schmitz and M. H. Shaevitz and F. C. Shoemaker and D. Smith and M. Soderberg and M. Sorel and P. Spentzouris and J. Spitz and I. Stancu and R. J. Stefanski and M. Sung and H. A. Tanaka and R. Tayloe and M. Tzanov and R. G. Van de Water and M. O. Wascko and D. H. White and M. J. Wilking and H. J. Yang and G. P. Zeller and E. D. Zimmerman},
journal= {arXiv preprint arXiv:1109.3480},
year = {2013}
}
Comments
14 pages, 3 figures, and 2 tables, submitted to Physics Letters B