Prospects and synergies between future atmospheric and long-baseline experiments

TL;DR

This paper explores the potential of future atmospheric neutrino experiments, especially in combination with long-baseline data, to enhance understanding of neutrino properties like mass hierarchy and CP violation.

Contribution

It provides a detailed analysis of atmospheric neutrino signatures and demonstrates the synergistic benefits of combining atmospheric and long-baseline experiment data.

Findings

Atmospheric neutrinos can reveal neutrino mass hierarchy and CP violation signatures.

Synergistic effects significantly improve sensitivity when combining data sets.

Neutrino oscillograms illustrate the potential of future detectors.

Abstract

In this talk we will discuss the physics reach of the atmospheric neutrino data collected by a future megaton-class neutrino detector. First we will discuss the potentialities of atmospheric neutrinos on general basis, presenting our results in the form of neutrino oscillograms of the Earth: contour plots in the neutrino energy--nadir angle plane. In this context we will analyze in detail the various signatures related to theta_13, to the neutrino mass hierarchy, to the octant of theta_23 and to the delta_CP phase which appear for different values of the neutrino energy and baseline. Then we will consider concrete experimental setups, showing that synergic effects exist between atmospheric and long-baseline neutrino data: the combination of the two data sets is much more powerful than the simple sum of the sensitivity of each individual data sample.