# EPS-HEP2019

10-17 July 2019
Ghent
Europe/Brussels timezone

## Neutrino oscillation and CPT violation due to quantum decoherence at DUNE

12 Jul 2019, 11:50
15m
ICC - Baeckeland 3 (Ghent)

### ICC - Baeckeland 3

#### Ghent

Parallel talk Neutrino Physics

### Speaker

Mr Félix Napoleón Díaz Desposorio (Pontificia Universidad Católica del Perú)

### Description

We study the feasibility of observing deviations from the CPT symmetry owing to quantum decoherence and in the framework of the neutrino oscillations. Taking into account the open system approach, and considering non-diagonal decoherence matrices, we study all the cases in which CPT violation (CPTV) terms that could be arising in the neutrino oscillation probabilities. Considering the vacuum case, we find exact solutions for the CPT asymmetry function. Moreover, in order to show tangible results,to make predictions of this model for the future Long-Baseline experiment and based on the information from the $\nu_{\mu} \rightarrow \nu_{\mu}$ and $\bar{\nu}_{\mu}\rightarrow \bar{\nu}_{\mu}$ channels, we define an observable $\mathcal{R}$ and we put on trial all the CPTV cases using the DUNE experiment. We found values of the decoherence parameters with $5 \sigma$ of discrepancy to standard physics which are allowed by the current experimental limits suggesting hints for new physics by this model in the context of future experiments.

https://doi.org/10.1103/PhysRevD.99.075022

### Primary authors

Mr Félix Napoleón Díaz Desposorio (Pontificia Universidad Católica del Perú) JUAN CARLOS CARRASCO MARTINEZ (Pontificia Universidad Católica del Perú) Alberto Martin Gago Medina (Pontificia Universidad Catolica del Peru (PE))