Explaining the ANITA events by a $L_e-L_{\tau }$ gauge model

Abstract

The ANITA experiment has registered two anomalous events that can be interpreted as ${\nu }_{\tau }$ or ${\bar{\nu }}_{\tau }$ with a very high energy of $\mathcal{O}(0.6)$~EeV emerging from deep inside the Earth. At such high energies, the Earth is opaque to neutrinos so the emergence of these neutrinos at such large zenith angles is a mystery. In our paper, we present a model that explains the two anomalous events through a $L_e-L_{\tau }$ gauge interaction involving two new Weyl fermions charged under the new gauge symmetry. We find that, as a bonus of the model, the lighter Weyl fermion can be a dark matter component. We discuss how the ANITA observation can be reconciled with the IceCube and Auger upper bounds. We also demonstrate how this model can be tested in future by collider experiments.

17 pages, 4 figures; v2: discussion on production mechanism expanded, matches the published version

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Cited by in corpus (12)

• Dark Matter Annihilation to Neutrinos
• Addressing $R_{D^{(\ast )}}$, $R_{K^{(\ast )}}$, muon $g-2$ and ANITA anomalies in a minimal $R$-parity violating supersymmetric framework
• Snowmass White Paper: Beyond the Standard Model effects on Neutrino Flavor
• Tau Neutrinos in the Next Decade: from GeV to EeV
• Unified explanation of flavor anomalies, radiative neutrino mass and ANITA anomalous events in a vector leptoquark model
• A search for IceCube events in the direction of ANITA neutrino candidates
• Observing EeV neutrinos through the Earth: GZK and the anomalous ANITA events
• The ANITA Anomalous Events and Axion Quark Nuggets
• Analysis of a Tau Neutrino Origin for the Near-Horizon Air Shower Events Observed by the Fourth Flight of the Antarctic Impulsive Transient Antenna (ANITA)
• On the Tau flavor of the cosmic neutrino flux
• Testing Heavy Neutral Leptons in Cosmic Ray Beam Dump experiments
• IceCube and the origin of ANITA-IV events