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The search for neutrino–antineutrino mixing resulting from Lorentz invariance violation using neutrino interactions in MINOS
Institution:1. Fermi National Accelerator Laboratory, Batavia, IL 60510, USA;2. Indiana University, Bloomington, IN 47405, USA;1. Institute for Experimental Physics, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany;2. Skobeltsyn Institute for Nuclear Physics, Lomonosow Moscow State University, 1 Leninskie gory, 119991 Moscow, Russia;3. DESY, Platanenallee 6, 15378 Zeuthen, Germany;1. Center for Space Science and Astrophysics, Stanford University, Stanford, CA 94305, USA;2. Department of Physics, Purdue University, West Lafayette, IN 47907, USA;3. Edwards Air Force Base, CA 93524, USA;4. Department of Nuclear Engineering, Texas A&M University, College Station, TX 77843, USA;5. Department of Physics, United States Air Force Academy, Colorado Springs, CO 80920, USA;6. NASA/Ames Research Center, MS 245-3, Moffett Field, CA 94035, USA;1. Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;2. National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China;3. Faculty of Engineering, Yokohama National University, Yokohama 240-8501, Japan;4. Department of Physics, Shandong University, Jinan 250100, China;5. Institute of Modern Physics, Southwest Jiaotong University, Chengdu 610031, China;6. Physics Department of Science School, Tibet University, Lhasa 850000, China;7. Institute for Cosmic Ray Research, University of Tokyo, Kashiwa 277-8582, Japan;1. Departamento de Física de Partículas & Instituto Galego de Física de Altas Enerxías, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain;2. University of Hawaii at Manoa, Department of Physics and Astronomy, Honolulu, HI 96822, USA
Abstract:We searched for a sidereal modulation in the rate of neutrinos produced by the NuMI beam and observed by the MINOS far detector. The detection of such harmonic signals could be a signature of neutrino–antineutrino mixing due to Lorentz and CPT violation as described by the Standard-Model Extension framework. We found no evidence for these sidereal signals and we placed limits on the coefficients in this theory describing the effect. This is the first report of limits on these neutrino–antineutrino mixing coefficients.
Keywords:Neutrino  Lorentz invariance  CPT
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