Search for Lorentz invariance and CPT violation with muon antineutrinos in the MINOS Near Detector

Creators: Adamson, P.; Himmel, A.; Mualem, L.; Newman, H. B.; Orchanian, M.; Patterson, R. B.; MINOS Collaboration

Abstract

We have searched for sidereal variations in the rate of antineutrino interactions in the MINOS Near Detector. Using antineutrinos produced by the NuMI beam, we find no statistically significant sidereal modulation in the rate. When this result is placed in the context of the Standard Model Extension theory we are able to place upper limits on the coefficients defining the theory. These limits are used in combination with the results from an earlier analysis of MINOS neutrino data to further constrain the coefficients.

Additional Information

© 2012 American Physical Society. Received 12 January 2012; published 9 February 2012. We gratefully acknowledge our many valuable conversations with Alan Kostelecký and Jorge Díaz during the course of this work. This work was supported by the U.S. DOE, the UK STFC, the U.S. NSF, the State and University of Minnesota, the University of Athens, Greece, and Brazil's FAPESP, CNPq. and CAPES. We are grateful to the Minnesota Department of Natural Resources, the crew of the Soudan Underground Laboratory, and the staff of Fermilab for their contributions to this effort.

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