CPT violation in long baseline neutrino experiments: A three flavor analysis

2008/02/29 by Amol Dighe, Shamayita Ray · 2 citations
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ph

paper · pdf · doi:10.1103/physrevd.78.036002

published as Phys.Rev.D78:036002,2008 · v2: 23 pages, 8 figures, revtex4. A new section on non-standard interaction (NSI) of neutrinos added. Version to appear in Phys. Rev. D

arxiv created 2008/07/16 · openalex publication_date 2008/08/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We explore possible signals of CPT violation in neutrinos in the complete three-flavor framework. Employing a systematic expansion in small parameters, we analytically estimate the CPT violating contributions to the survival probabilities of \ensuremathν_\ensuremathμ, \ensuremathν_\ensuremathμ, \ensuremathν_e and, \ensuremathν_e. The results indicate that, in spite of the large number of CPT violating parameters, only a small number of combinations are relevant for oscillation experiments. We identify the combinations that can be constrained at the long baseline experiments, and show that their contribution to the neutrino Hamiltonian can be bounded to \ensuremath\lesssim10^\ensuremath-23 GeV, by considering the NOvA experiment for the muon sector, and neutrino factories for the electron sector. This formalism also allows us to translate the bounds on the parameters describing non-standard interactions of neutrinos into the bounds on CPT violating quantities.

Citations

• Simulation of long-baseline neutrino oscillation experiments with GLoBES
• How accurately can one test CPT conservation with reactor and solar neutrino experiments?
• New features in the simulation of neutrino oscillation experiments with GLoBES 3.0
• Preliminary reference Earth model
• Neutrino interactions in oscillation experiments

Cited by

• Probing CPT violation in neutrino oscillation: A three flavor analysis
• Can Lorentz invariance violation affect the sensitivity of deep underground neutrino experiment?

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