Quantum decoherence and relaxation in long-baseline neutrino data

• DOI: 10.48550/arxiv.2001.09250
• Publication Date: 2020-01-01
• Authors: A. L. G. Gomes; R. A. Gomes; O. L. G. Peres
• Keywords: MINOS

We investigate the effect of quantum decoherence and relaxation in neutrino oscillations using MINOS T2K data. The formalism open systems is used to describe interaction a system with environment, where strength regulated by parameter $\Gamma$. assume an energy dependence parameterized $\Gamma = \gamma_0 (E/\mbox{GeV})^n$, $n=-2,0,+2$, consider three different scenarios, allowing investigation constraining solar atmospheric sectors same parameter. data present complementary behavior, regard our theoretical model, resulting better sensitivity for $n +2$ -2$, respectively. perform combined analyses both experimental data, which also include reactor constraint on $\sin^2 \theta_{13}$, observe independence results scenarios we investigate. As highlight obtain best limit $\gamma_0$ reporting upper bound $1.7 \times 10^{-23}$~GeV, at 90\% confidence level.