Dissipative Effect in Long Baseline Neutrino Experiments

TL;DR

This paper investigates how dissipation effects, modeled via Lindblad Master Equation, influence neutrino oscillation probabilities in long baseline experiments like DUNE, revealing new features such as an exotic peak.

Contribution

It introduces a comprehensive analysis of dissipation effects on neutrino oscillations, including decoherence and relaxation, with adapted probability expressions and numerical simulations for DUNE.

Findings

Dissipative effects can significantly alter neutrino probability patterns.

A new exotic peak appears due to decoherence and relaxation effects.

Decoherence parameters impact the probabilities in measurable ways.

Abstract

The propagation of neutrinos in long baselines experiments may be influenced by dissipation effects. Using Lindblad Master Equation we evolve neutrinos taking into account these dissipative effects. The MSW and the dissipative effects may change the probabilities behavior. In this work, we show and explain how the behavior of the probabilities can change due to the decoherence and relaxation effects acting individually with the MSW effect. A new exotic peak appears in this case and we show the difference between the decoherence and relaxation effects in the appearance of this peak. We also adapt the usual approximate expression for survival and appearance probabilities with all possible decoherence effects. We suppose the baseline of DUNE and show how each decoherence parameters change the probabilities analyzing the possible modification using numeric and analytic approach.