Probing the violation of equivalence principle at a muon storage ring via neutrino oscillation |
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| Institution: | 1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;2. Shanghai EBIT Laboratory, Modern Physics Institute, Fudan University, Shanghai 200433, China;3. University of Chinese Academy of Sciences, Beijing 100049, China;1. Department of Chemistry, Federal University of Lavras, P.O. Box 3037, 37200-000 Lavras, MG, Brazil;2. Department of Chemical and Petroleum Engineering (UFF), Rua Passo da Pátria, 156, Niterói, RJ, Brazil;3. Center for Basic and Applied Research, Faculty of Informatics and Management, University of Hradec Kralove, Hradec Kralove, Czech Republic;1. School of Chemistry, The University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom;2. Department of Chemical and Environmental Engineering, The University of Nottingham Ningbo China, 199 Taikang East Road, Ningbo 315100, China;3. Dynamic Structural Science Consortium, Research Complex at Harwell, Didcot, Oxfordshire OX11 0FA, United Kingdom;4. Central Laser Facility, Research Complex at Harwell, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxfordshire OX11 0QX, United Kingdom;5. School of Chemistry, University of Manchester, Manchester M13 9PL, UK;1. Departamento de Física da Universidade de Aveiro and CIDMA, Campus de Santiago, 3810-183 Aveiro, Portugal;2. Institut für Physik, Universität Oldenburg, Postfach 2503 D-26111 Oldenburg, Germany;3. Department of Physics, Institut Teknologi Sepuluh Nopember, Indonesia;1. Instituto de Ciência e Tecnologia, Universidade Federal de Alfenas, 37715-400 Poços de Caldas-MG, Brazil;2. Instituto de Física, Universidade de São Paulo, Rua do Matão 1371, 05508-090 São Paulo-SP, Brazil;3. Department of Physics and Astronomy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854-8019, USA |
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| Abstract: | We examine the possible tests of violation of the gravitational equivalence principle (VEP) at a muon storage ring via neutrino oscillation experiments. If the gravitational interactions of the neutrinos are not diagonal in the flavour basis and the gravitational interaction eigenstates have different couplings to the gravitational field, this leads to the neutrino oscillation. If one starts with μ+ beam then appearance of τ±, e+ and μ? in the final state are the signals for neutrino oscillation. We have estimated the number of μ? events in this scenario in νμ–N deep inelastic scattering. Final state lepton energy distribution can be used to distinguish the VEP scenario from the others. A large area of VEP parameter space can be explored at a future muon storage ring facility with moderate beam energy. |
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