Influences of non-standard interactions on PeV neutrino events with and without a $L_{\alpha}-L_{\beta}$ symmetry

TL;DR

This paper investigates how non-standard interactions, especially those with an $L_{ ext{alpha}} - L_{ ext{beta}}$ gauge symmetry, influence PeV neutrino events, potentially allowing future experiments to constrain new physics parameters.

Contribution

It analyzes the effects of NSIs with and without $L_{ ext{alpha}} - L_{ ext{beta}}$ symmetry on PeV neutrino observations, highlighting the more significant impact of gauge-symmetric NSIs.

Findings

NSIs with gauge symmetry significantly affect PeV neutrino signals

Upcoming experiments can constrain NSI parameters in $L_{ ext{alpha}} - L_{ ext{beta}}$ symmetric models

Detection of PeV events can test new physics scenarios involving NSIs

Abstract

The recently reported astrophysical neutrinos events in the TeV-PeV energy range open a winder to explore new physics at energy frontiers. In this paper, we examine effects of non-standard interactions (NSIs) on the PeV neutrinos events. We consider NSIs with and without a gauge symmetry $L_{\alpha}$ - $L_{\beta}$. We find that, for typical $\mu^{\pm}$ damping and $\pi^{\pm}$ decay sources, the NSI with an extra gauge symmetry has more noticeable effects on the PeV events. Therefore, the detection of the events in the upcoming experiments could set stringent constraints on the NSI parameters in the $L_{\alpha}$ - $L_{\beta}$ symmetric case.