The Leptoquark Implication from the CMS and IceCube Experiments

Abstract

The recent excess in the CMS measurements of $eejj$ and $e\nu jj$ channels and the emergence of PeV comsic neutrino events at the IceCube experiment share an intriguing implication for a leptoquark with a 600-650 GeV mass. We investigate the CMS constraints on the flavor structure of a scenario with the minimal leptoquark Yukawa couplings and correlate such a scenario to the resonant enhancement in the very high energy shower event rates at the IceCube. We find for a single leptoquark, the CMS signals require large couplings to the third generation leptons. This leads to an enhancement in the ${\nu }_{\tau }$-nucleon scattering cross-section and subsequently more ${\nu }_{\tau }$ events at PeV energies. However, a visible enhancement above the Standard Model scattering would require a leptoquark Yukawa coupling larger than one that can be easily tested at the upcoming LHC runs.

PRD version. Meson decay constraints and additional citations are added. 6 pages, 2 figures, 1 table

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Cited by in corpus (31)

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• The IceCube high-energy starting event sample: Description and flux characterization with 7.5 years of data
• Superheavy dark matter and IceCube neutrino signals:bounds on decaying dark matter
• Probing BSM Neutrino Physics with Flavor and Spectral Distortions: Prospects for Future High-Energy Neutrino Telescopes
• Pair Production of Scalar Leptoquarks at the LHC to NLO Parton Shower Accuracy
• MeV scale leptonic force for cosmic neutrino spectrum and muon anomalous magnetic moment
• Searching for MeV-Scale Gauge Bosons with IceCube
• Snowmass White Paper: Beyond the Standard Model effects on Neutrino Flavor
• Discrepancies in simultaneous explanation of Flavor Anomalies and IceCube PeV Events using Leptoquarks
• Searching for Leptoquarks at IceCube and the LHC
• Multimessenger Astronomy and New Neutrino Physics
• Seeking leptoquarks in IceCube
• R-parity Violating Supersymmetry at IceCube
• Multi-PeV Signals from a New Astrophysical Neutrino Flux Beyond the Glashow Resonance
• IC at IC: IceCube can constrain the intrinsic charm of the proton
• Probing New Physics at Future Tau Neutrino Telescopes
• Constraints on Leptoquark Models from IceCube Data
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• Signatures of Leptoquarks at the LHC and Right-handed Neutrinos
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• Leptoquarks: 750 GeV Diphoton Resonance and IceCube Events
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• Charged Higgs effects in IceCube: PeV events and NSIs
• Supergravity Model of Inflation and Explaining IceCube HESE Data via PeV Dark Matter Decay
• Explanation of IceCube spectrum with $\nu \to 3\nu$ neutrino splitting in a $\nu$2HDM model
• Phenomenology of Colored Radiative Neutrino Mass Model and Its Implications on the Cosmic-ray Observations
• New IceCube data and color octet neutrino interpretation of the PeV energy events
• Signatures of Supersymmetry in Neutrino Telescopes
• Probing the cosmic sterile-neutrino background with IceCube