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Looking for Lorentz invariance violation (LIV) in the latest long baseline accelerator neutrino oscillation data
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abstract
In this paper, we have analysed the latest data from NO$\nu$A and T2K with the Lorentz invariance violation along with the standard oscillation hypothesis. We have found that the NO$\nu$A data cannot distinguish between the two hypotheses at $1\, \sigma$ confidence level. T2K data and the combined data analysis excluded standard oscillation at $1\, \sigma$. All three cases do not have any hierarchy sensitivity when analysed with LIV. There is a mild tension between the two experiments, when analysed with LIV, as $\theta_{23}$ at \nova best-fit is at higher octant but the same for T2K is at lower octant. NO$\nu$A has a new degeneracy over $\sin^2 \theta_{23}$ value, when analysed with LIV.
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Cited by 2 Pith papers
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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...
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Resolving Lorentz-Violating New Physics at ESSnuSB Using High-Statistics Complementarity with T2HK
A combined ESSnuSB+T2HK sensitivity analysis resolves most LIV-induced θ23 octant degeneracies and keeps δCP near −90°, with residual degeneracies for |a_eτ| and a_ee at the 360 km combination.
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