Seeking leptoquarks in IceCube
Damir Be\v{c}irevi\'c, Boris Panes, Olcyr Sumensari, Renata, Zukanovich Funchal

TL;DR
This paper assesses IceCube(-Gen2)'s ability to detect scalar leptoquarks linked to B-meson decay anomalies, considering neutrino-gluon interactions and existing constraints, and finds it can only probe already disfavored light leptoquarks.
Contribution
It introduces the first analysis of neutrino-gluon cross sections induced by leptoquarks and systematically incorporates overlooked constraints in IceCube sensitivity studies.
Findings
IceCube(-Gen2) can only probe the light leptoquark regime.
Light leptoquarks are already disfavored by other constraints.
Neutrino-gluon interactions are significant in the analysis.
Abstract
We investigate the sensitivity of IceCube(-Gen2) to a scalar leptoquark scenario with couplings only to heavy quark flavors which may be connected to solving discrepancies in -meson semileptonic decays. We take into account, for the first time, the non-negligible neutrino-gluon cross section induced by leptoquarks, and we systematically account for indirect and direct constraints which have been overlooked in previous studies. We conclude that IceCube(-Gen2) can only probe the light LQ regime, already disfavored by the combination of flavor physics constraints, electroweak precision data and the direct searches at the LHC.
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