A $\nu$ window onto leptoquarks?

TL;DR

Upcoming neutrino telescopes at ultrahigh energies can test leptoquark models by detecting deviations in neutrino interactions, but collider searches remain more competitive for constraining these models.

Contribution

This paper updates predictions for neutrino-nucleon cross-section enhancements in leptoquark models and incorporates the latest collider and flavor physics constraints.

Findings

Neutrino telescopes will not surpass collider searches in constraining leptoquarks.

Updated bounds from LHC pair production and Drell-Yan data.

Neutrino experiments at ultrahigh energies have limited sensitivity to leptoquarks.

Abstract

Upcoming neutrino telescopes promise a new window onto the interactions of neutrinos with matter at ultrahigh energies ($E_\nu = 10^7$-$10^{10}$ GeV), and the possibility to detect deviations from the Standard Model predictions. In this paper, we update previous predictions for the enhancement of the neutrino-nucleon cross-section for motivated leptoquark models and show the latest neutrino physics bound, as well as analyse the latest LHC pair production and Drell-Yan data, and flavour constraints (some of which were previously missed). We find that, despite the next generation of neutrino experiments probing the highest energies, they will not be enough to be competitive with collider searches.