R-parity Violating Supersymmetry at IceCube

TL;DR

This paper investigates how R-parity violating supersymmetric interactions could produce detectable signals in IceCube neutrino data, setting limits on new physics parameters based on current observations.

Contribution

It derives the first robust upper limits on RPV couplings from IceCube data, independent of many model parameters, for resonantly-produced squarks.

Findings

No significant deviation from Standard Model expectations in IceCube data.

Established upper limits on RPV couplings as a function of squark mass.

Limits are comparable to collider and low-energy constraints with more data.

Abstract

The presence of $R$-parity violating (RPV) supersymmetric interactions involving high-energy neutrinos can lead to resonant production of TeV-scale squarks inside large-volume neutrino detectors. Using the ultra-high energy neutrino events observed recently at the IceCube, with the fact that for a given power-law flux of astrophysical neutrinos, there is no statistically significant deviation in the current data from the Standard Model expectations, we derive robust upper limits on the RPV couplings as a function of the resonantly-produced squark mass, independent of the other unknown model parameters, as long as the squarks decay dominantly to 2-body final states involving leptons and quarks through the RPV couplings. With more statistics, we expect these limits to be comparable/complementary to the existing limits from direct collider searches and other low-energy processes.