Proposes a new up-down flux ratio for sub-GeV atmospheric neutrinos to measure δ_CP, potentially exceeding T2HK sensitivity near 90° and 270° at Hyper-Kamiokande.
Analytic Approximations for Three Neutrino Oscillation Parameters and Probabilities in Matter
2 Pith papers cite this work. Polarity classification is still indexing.
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Pith papers citing it
abstract
The corrections to neutrino mixing parameters in the presence of matter of constant density are calculated systematically as series expansions in terms of the mass hierarchy $\dm{21}/\dm{31}$. The parameter mapping obtained is then used to find simple, but nevertheless accurate formulas for oscillation probabibilities in matter including CP-effects. Expressions with one to one correspondence to the vacuum case are derived, which are valid for neutrino energies above the solar resonance energy. Two applications are given to show that these results are a useful and powerful tool for analytical studies of neutrino beams passing through the Earth mantle or core: First, the ``disentanglement problem'' of matter and CP-effects in the CP-asymmetry is discussed and second, estimations of the statistical sensitivity to the CP-terms of the oscillation probabilities in neutrino factory experiments are presented.
fields
hep-ph 2years
2026 2representative citing papers
Combined CPT-violating and CPT-conserving Lorentz-invariance-violation parameters suppress DUNE's CP-violation sensitivity below 3σ over much of the δ_CP range and introduce parameter degeneracies that complicate δ_CP extraction.
citing papers explorer
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Towards Measuring the CP-Violating Phase with Atmospheric Neutrinos
Proposes a new up-down flux ratio for sub-GeV atmospheric neutrinos to measure δ_CP, potentially exceeding T2HK sensitivity near 90° and 270° at Hyper-Kamiokande.
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Interplay of CPT-Violating and CPT-Conserving Lorentz Invariance Violation at DUNE
Combined CPT-violating and CPT-conserving Lorentz-invariance-violation parameters suppress DUNE's CP-violation sensitivity below 3σ over much of the δ_CP range and introduce parameter degeneracies that complicate δ_CP extraction.