Study of quantum decoherence at Protvino to ORCA experiment

Abstract

Protvino to ORCA (Oscillation Research with Cosmics in the Abyss) (P2O) is an upcoming neutrino oscillation experiment with a very long baseline of 2595 km. Due to the substantial baseline, this experiment provides a unique opportunity to study the earth matter effects over very large distances. This makes it a suitable experiment to investigate the environmental decoherence in neutrino oscillations, where the neutrino system could interact with a stochastic environment and lead to a loss in the coherence of neutrino states. In this work, we consider an open quantum system framework to simulate the neutrino oscillations in P2O experiment and obtain bounds on the decoherence parameters in different phenomenological models. We assume that the decoherence parameter $\Gamma$ depends on neutrino energy $E_{\nu }$ as ${\Gamma }_{ij}(E_{\nu })={\Gamma }_0(\frac{E_{\nu }}{E_0}{)}^n$. Further, we use these bounds to study the effect on the neutrino mass ordering sensitivity and CP violation sensitivity of P2O experiment.

23 pages, 12 figures

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• Probing new physics scenarios using high energy events at NOvA far detector