Search for Lorentz Invariance and CPT Violation with the MINOS Far Detector

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

Abstract

We searched for a sidereal modulation in the MINOS far detector neutrino rate. Such a signal would be a consequence of Lorentz and CPT violation as described by the standard-model extension framework. It also would be the first detection of a perturbative effect to conventional neutrino mass oscillations. We found no evidence for this sidereal signature, and the upper limits placed on the magnitudes of the Lorentz and CPT violating coefficients describing the theory are an improvement by factors of 20–510 over the current best limits found by using the MINOS near detector.

Additional Information

© 2010 The American Physical Society. Received 18 July 2010; published 4 October 2010. We gratefully acknowledge the many valuable conversations with Alan Kostelecký and Jorge Diaz during the course of this work. This work was supported by the U.S. DOE, the United Kingdom STFC, the U.S. NSF, the State and University of Minnesota, the University of Athens, Greece, and Brazil's FAPESP and CNPq. We are grateful to the Minnesota Department of Natural Resources, the crew of the Soudan Underground Laboratory, and the staff of Fermilab for their contribution to this effort.

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Published - Adamson2010p11629Phys_Rev_Lett.pdf

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