Quantum Decoherence at ESSnuSB Experiment

TL;DR

This paper evaluates the sensitivity of the ESSnuSB neutrino experiment to quantum decoherence effects, demonstrating its competitive ability to constrain decoherence parameters and its robustness in measuring CP violation.

Contribution

It introduces the use of the open quantum system formalism to assess ESSnuSB's sensitivity to quantum decoherence, a novel application for this experiment.

Findings

ESSnuSB can better constrain decoherence than MINOS.

Its sensitivity is comparable to DUNE.

CP measurement remains robust despite decoherence effects.

Abstract

In this proceedings we study the sensitivity of the ESSnuSB experiment to probe quantum decoherence. ESSnuSB is a future long-baseline neutrino oscillation experiment which aims to measure $\delta_{\rm CP}$ by probing the second oscillation maximum. Using the open quantum system formalism for decoherence, we have shown that the sensitivity of ESSnuSB to constrain the decoherence parameters is better than MINOS but comparable to DUNE. We have also shown that the CP measurement capability of ESSnuSB is robust in presence of decoherence.