Sensitivity of the JEM-EUSO telescope to gravity effects in neutrino-induced air showers

TL;DR

This paper investigates how the JEM-EUSO telescope could detect gravity effects predicted by the Randall-Sundrum model through ultra-high-energy neutrino interactions causing air showers.

Contribution

It introduces a method to probe extra-dimensional gravity effects via neutrino-induced air showers observed by JEM-EUSO, linking theoretical models to observable phenomena.

Findings

Predicted number of air showers varies with RS model parameters.

Potential to detect Kaluza-Klein graviton effects in cosmic neutrino interactions.

Provides a framework for testing extra-dimensional theories with cosmic ray data.

Abstract

We examine the JEM-EUSO sensitivity to gravity effects in the context of Randall-Sundrum (RS) model with a single extra dimension and small curvature of the metric. Exchanges of reggeized Kaluza-Klein gravitons in the $t$-channel contribute to the inelastic cross-section for scattering of ultra-high-energy neutrinos off nucleons. Such effects can be detected in deeply penetrating quasi-horizontal air showers induced by interactions of cosmic neutrinos with atmospheric nucleons. For this reason, we calculate the expected number of quasi-horizontal air showers at the JEM-EUSO observatory as a function of two parameters of the RS model.