Resonant oscillations of massless neutrinos in matter |
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| Institution: | 1. Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA;2. Departamento de Fisica Teorica, Universitat de Valencia, E-46100 Burjassot (Valencia, Spain;1. GIPSA-Lab, UMR CNRS 5216, Grenoble Alpes University, 11 rue des Mathématiques (BP46), 38402 Grenoble, France;2. LEGI, UMR CNRS 5519, Grenoble Alpes University, 38058 Grenoble, France;3. LPNC, UMR CNRS 5105, Grenoble Alpes University, (BP47), 38040 Grenoble, France;1. Department of Mathematics, Pohang University of Science and Technology, Pohang 790-784, South Korea;2. Key Laboratory of Computational Geodynamics, University of Chinese Academy of Sciences, Beijing 100049, PR China;3. Department of Geology and Geophysics, University of Minnesota, Minneapolis, MN 55455, USA;1. Key Laboratory of In-Fiber Integrated Optics, Ministry of Education of China, Harbin Engineering University, Harbin 150001, People''s Republic of China;2. Physics Research Center, College of Science, Harbin Engineering University, Harbin 150001, People''s Republic of China;3. Key Laboratory of Multi-scale Manufacturing Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, People''s Republic of China;1. Instituto de Física Corpuscular (IFIC), CSIC-Universitat de València, Apartado de Correos 22085, E-46071 Valencia, Spain;2. Institute for Particle Physics Phenomenology (IPPP), Department of Physics, Durham University, Durham DH1 3LE, United Kingdom |
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| Abstract: | Oscillations of neutrinos propagating in matter do not require that neutrinos are massive, at a fundamental level. Even if neutrinos are massless as a consequence of an exact symmetry - such as total lepton number - they can oscillate into one another if the weak interaction has a small non-universal component, whose existence would signal physics beyond the standard model. The experimental constraints and theoretical plausibility of the mechanism are discussed. Coherent neutrino and antineutrino scattering could substantially affect the late thermal phase neutrino signal from a supernova explosion. |
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