Lorentz and CPT violation in neutrinos
By A. Kostelecky, Matthew Mewes. 2003
260 citations recorded by the source corpus.
A general formalism is presented for violations of Lorentz and CPT symmetry in the neutrino sector. The effective Hamiltonian for neutrino propagation in the presence of Lorentz and CPT violation is derived, and its properties are studied. Possible definitive signals in existing and future neutrino-oscillation experiments are discussed. Among the predictions are direction-dependent effects, including neutrino-antineutrino mixing, sidereal and annual variations, and compass asymmetries. Other consequences of Lorentz and CPT violation involve unconventional energy dependences in oscillation lengths and mixing angles. A variety of simple models both with and without neutrino masses are developed to illustrate key physical effects. The attainable sensitivities to coefficients for Lorentz violation in the Standard-Model Extension are estimated for various types of experiments. Many experiments have potential sensitivity to Planck-suppressed effects, comparable to the best tests in other sectors. The lack of existing experimental constraints, the wide range of available coefficient space, and the variety of novel effects imply that some or perhaps even all of the existing data on neutrino oscillations might be due to Lorentz and CPT violation.
Subfields: Nuclear and High Energy Physics, Statistical and Nonlinear Physics
View Paper: https://www.semanticscholar.org/paper/bf7dde8fd9c3e7ff0b8a62ebc38d97e13ec3508c
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Citations in the corpus
- Invited review: Physics potential of the ICAL detector at the India-based Neutrino Observatory (INO) (2015, background): “However in a Standard Model Extended (SME) Lagrangian that does not respect the Lorentz trasformation symmetry, the CPT violation (CPTV) may be manifest [143, 144], which may be measurable at the neutrino oscillation experiments.”
- Long-Baseline Neutrino Facility (LBNF) and Deep Underground Neutrino Experiment (DUNE) Conceptual Design Report Volume 2: The Physics Program for DUNE at LBNF (2015, background): “Atmospheric neutrinos provide a window into a range of new physics scenarios, and may allow DUNE to place limits on CPT violation [83], non-standard interactions [105], mass-varying neutrinos [106], sterile neutrinos [107], and Lorentz invariance violation [84].”
- Modern Tests of Lorentz Invariance (2005, background): “ribe. For a more comprehensive overview of neutrino mixing, see for example [71, 115]. 6.8.1 Neutrino oscillations Lorentz violating effects in the neutrino sector have been considered by many authors [56, 129, 128, 127, 53, 37, 12, 86]. To illustrate how Lorentz violation affects neutrino propagation”
- IceCube-Gen2: the window to the extreme Universe (2020, background): “These effects can be detected in a neutrino telescope as an anomalous oscillation effect proportional to the neutrino energy, instead of inversely proportional to energy as in standard oscillations [305–316].”
- Long-Baseline Neutrino Facility (LBNF) and Deep Underground Neutrino Experiment (DUNE) Conceptual Design Report Volume 1: The LBNF and DUNE Projects (2015, background): “As another example of a probe of new physics with supernova neutrinos or antineutrinos, a class of tests of Lorentz and CPT violation involves comparing the propagation of neutrinos with other species or of neutrinos of the same flavor but different energies [83, 145, 84, 146].”
- Deep Underground Neutrino Experiment (DUNE), Far Detector Technical Design Report, Volume II: DUNE Physics (2020, background): “All SME coefficients for Lorentz and CPT violation governing the propagation and oscillation of neutrinos have been enumerated [235, 236], and many experimental measurements of SME coefficients have been performed to date [237].”