Searching for Leptoquarks at IceCube and the LHC

Abstract

In the light of recent experimental results from IceCube, LHC searches for scalar leptoquark, and the flavor anomalies $R_K$ and $R_{K^{\ast }}$, we analyze two scalar leptoquark models with hypercharge $Y=1/6$ and $Y=7/6$. We consider the 53 high-energy starting events from IceCube and perform a statistical analysis, taking into account both the Standard Model and leptoquark contribution together. The lighter leptoquark states that are in agreement with IceCube are strongly constrained from LHC di-lepton+dijet search. Heavier leptoquarks in the TeV mass range are in agreement both with IceCube and LHC. We furthermore show that leptoquark which explains the $B$-physics anomalies and does not have any coupling with the third generation of quarks and leptons, can be strongly constrained.

24 pages, 8 figures, 1 table; typos corrected, discussions and references added; matches published version

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• Combined explanations of $(g-2{)}_{\mu }$, $R_{D^{(\ast )}}$, $R_{K^{(\ast )}}$ anomalies in a two-loop radiative neutrino mass model
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• Multimessenger Astronomy and New Neutrino Physics
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• $R(K^{(\ast )})$ from dark matter exchange
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• Multi-lepton probes of new physics and lepton-universality in top-quark interactions
• Signature of light sterile neutrinos at IceCube
• Probing Neutrino Mass Models through Resonances at Neutrino Telescopes
• Right-handed neutrino pair production via second-generation leptoquarks
• Addendum to: Combined Constraints on First Generation Leptoquarks
• Next-to-Leading-Order QCD Matching for $\Delta F=2$ Processes in Scalar Leptoquark Models
• Constraining scalar leptoquarks using COHERENT data
• Cutoff of IceCube Neutrino Spectrum due to t-channel Resonant Absorption by C$\nu$B
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