Indirect Probes of Supersymmetry Breaking in Multi-Km3 Neutrino Telescopes

TL;DR

This paper explores how large-volume neutrino telescopes can indirectly measure the supersymmetry breaking scale by detecting tau and muon signals resulting from neutrino interactions in the Earth, complementing direct detection methods.

Contribution

It demonstrates that multi-Km3 neutrino telescopes can independently probe supersymmetry breaking scales between 10^5 and 5 x 10^6 GeV through tau and muon detection, considering background challenges.

Findings

Neutrino telescopes can probe supersymmetry breaking scales indirectly.

Tau and muon signals from neutrino interactions are key observables.

Detection rates depend on background suppression and flux estimates.

Abstract

Recently it has been shown that fluorescence telescopes with a large field of view can indirectly probe the scale of supersymmetry breaking. Here we show that depending on their ability to fight a large background, multi-Km3 volume neutrino telescopes might independently probe a similar breaking scale region, which lies between \sim 10^5 and \sim 5 x 10^6 GeV. The scenarios we consider have the gravitino as the lightest supersymmetric particle, and the next to lightest (NLSP) is a long lived slepton. Indirect probes complement a proposal that demonstrates that 1 Km3 telescopes can directly probe this breaking scale. A high energy flux of neutrinos might interact in the Earth producing NLSPs which decay into taus. We estimate the rate of taus, taking into account the regeneration process, and the rate of secondary muons, which are produced in tau decays, in multi-km3 detectors.