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19 April 2024

» arxiv » 1109.3480

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Test of Lorentz and CPT violation with Short Baseline Neutrino Oscillation Excesses
MiniBooNE Collaboration ; A. A. Aguilar-Arevalo ; C. E. Anderson ; A. O. Bazarko ; S. J. Brice ; B. C. Brown ; L. Bugel ; J. Cao ; L. Coney ; J. M. Conrad ; D. C. Cox ; A. Curioni ; R. Dharmapalan ; Z. Djurcic ; D. A. Finley ; B. T. Fleming ; R. Ford ; F. G. Garcia ; G. T. Garvey ; J. Grange ; C. Green ; J. A. Green ; T. L. Hart ; E. Hawker ; W. Huelsnitz ; R. Imlay ; R. A. Johnson ; G. Karagiorgi ; P. Kasper ; T. Katori ; T. Kobilarcik ; I. Kourbanis ; S. Koutsoliotas ; E. M. Laird ; S. K. Linden ; J. M. Link ; Y. Liu ; Y. Liu ; W. C. Louis ; K. B. M. Mahn ; W. Marsh ; C. Mauger ; V. T. McGary ; G. McGregor ; W. Metcalf ; P. D. Meyers ; F. Mills ; G. B. Mills ; J. Monroe ; C. D. Moore ; J. Mousseau ; R. H. Nelson ; P. Nienaber ; J. A. Nowak ; B. Osmanov ; S. Ouedraogo ; R. B. Patterson ; Z. Pavlovic ; D. Perevalov ; C. C. Polly ; E. Prebys ; J. L. Raaf ; H. Ray ; B. P. Roe ; A. D. Russell ; V. Sandberg ; R. Schirato ; D. Schmitz ; M. H. Shaevitz ; F. C. Shoemaker ; D. Smith ; M. Soderberg ; M. Sorel ; P. Spentzouris ; J. Spitz ; I. Stancu ; R. J. Stefanski ; M. Sung ; H. A. Tanaka ; R. Tayloe ; M. Tzanov ; R. G. Van de Water ; M. O. Wascko ; D. H. White ; M. J. Wilking ; H. J. Yang ; G. P. Zeller ; E. D. Zimmerman ;
Date:	15 Sep 2011
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 are the best limits of 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.
Source:	arXiv, 1109.3480
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