Looking at the axionic dark sector with ANITA

Abstract

The ANITA experiment has recently observed two anomalous events emerging from well below the horizon. Even though they are consistent with tau cascades, a high energy Standard Model or Beyond the Standard Model explanation is challenging and in tension with other experiments. We study under which conditions the reflection of generic radio pulses can reproduce these signals. We propose that these pulses can be resonantly produced in the ionosphere via axion-photon conversion. This naturally explains the direction and polarization of the events and avoids other experimental bounds.

arXiv commentNew figure added (Fig. 5): estimation of ALP mass, coupling and corrected value of burst density, consistent with ANITA and present ALP experimental bounds. Estimation of ALP burst rate reaching the Earth added. Matches version accepted by EPJC

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• Snowmass White Paper: Beyond the Standard Model effects on Neutrino Flavor
• POEMMA's Target of Opportunity Sensitivity to Cosmic Neutrino Transient Sources
• 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
• Explaining the ANITA Anomaly with Inelastic Boosted Dark Matter
• Probing Relativistic Axions from Transient Astrophysical Sources
• Discovery prospects with the Dark-photons & Axion-Like particles Interferometer
• A dark matter telescope probing the 6 to 60 GHz band
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• The ANITA Anomalous Events and Axion Quark Nuggets
• Explaining the ANITA events by a $L_e-L_{\tau }$ gauge model
• Connecting ANITA Anomalous Events to a Non-thermal Dark Matter Scenario
• Anomalous ANITA air shower events and tau decays
• The pros and cons of beyond standard model interpretations of ANITA events
• IceCube and the origin of ANITA-IV events
• General Treatment of Reflection of Spherical Electromagnetic Waves from a Spherical Surface and its Implications for the ANITA Anomalous Polarity Events
• An Axion Interpretation of the ANITA Events