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June 22, 2020 to July 2, 2020
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Impact of Lorentz Invariance Violation at DUNE

Not scheduled


Dr Mehedi Masud (Institute of Physics, Bhubaneswar)


We examine the impact of Lorentz Invariance Violation (LIV) in measuring the octant of $\theta_{23}$ and CP phases at DUNE. We consider the LIV parameters $a_{e\mu}$ and $a_{e\tau}$, which induce an additional interference term in oscillation probabilities. Taking one LIV parameter at-a-time ($|a_{e\mu}| = |a_{e\tau}| = 5 \times 10^{-24}$ GeV), we find that the octant discovery potential of DUNE gets substantially deteriorated for unfavorable combinations of $\delta$ and $\varphi_{e\mu}$/$\varphi_{e\tau}$. The octant can only be resolved at $3\sigma$ if the true value of $\sin^2\theta_{23}<0.42$ or $>0.62$ for any choices of $\delta$ and $\varphi$. Interestingly, we also observe that when both $a_{e\mu}$ and $a_{e\tau}$ are present together, they significantly cancel the impact of each other and DUNE largely regains its octant resolution capability. We also reconstruct the CP phases $\delta$ and $\varphi_{e\mu}$/$\varphi_{e\tau}$. The typical $1\sigma$ uncertainty on $\delta$ is $10^{\circ}$ to $15^{\circ}$ and the same on $\varphi_{e\mu}$/$\varphi_{e\tau}$ is $25^{\circ}$ to $30^{\circ}$.


Measuring 2-3 mixing angle and CP phases at DUNE in the presence of Lorentz Invariance Violation

Primary author

Dr Mehedi Masud (Institute of Physics, Bhubaneswar)


Prof. Sanjib Kumar Agarwalla (Institute of Physics, Bhubaneswar)

Presentation Materials