Effects of nonstandard neutrino interactions at PINGU

TL;DR

This paper investigates how non-standard neutrino interactions could alter neutrino oscillation measurements at PINGU, showing significant effects on probabilities and event rates, and highlighting PINGU's sensitivity to these interactions.

Contribution

It provides a detailed analysis of non-standard neutrino interactions' impact on oscillation probabilities and event rates at PINGU, emphasizing the experiment's sensitivity to new physics.

Findings

Non-standard interactions significantly modify neutrino oscillation probabilities.

CP-violating effects are greatly enhanced by non-standard interactions.

PINGU has high sensitivity to non-standard neutrino interaction parameters.

Abstract

Neutrino oscillation experiments in the past decades have greatly improved our knowledge on neutrinos by measuring the fundamental neutrino parameters. The ongoing and upcoming neutrino oscillation experiments are intended to pin down the neutrino mass hierarchy and to discover the leptonic CP violation. By means of neutrino oscillograms, we analyze the impact of non-standard neutrino interactions on neutrino oscillations in the Earth matter. The standard neutrino oscillation probabilities may be significantly changed by non-standard interaction parameters, and in particular, the CP-violating effects in the energy range E = 1 ~ 20 GeV are greatly enhanced. In addition, the event rates of muon neutrinos in the proposed huge atmospheric neutrino experiment, PINGU at the South Pole, have been estimated in the presence of non-standard neutrino interactions. It has been found that the PINGU experiment has very good sensitivities to the non-standard neutrino interaction parameters.