Can the ANITA anomalous events be due to new physics?

Abstract

The ANITA collaboration has observed two ultra-high-energy upgoing air shower events that cannot originate from Standard Model neutrinos that have traversed the Earth. Several beyond-the-standard-model physics scenarios have been proposed as explanations for these events. In this paper we present some general arguments making it challenging for new physics to explain the events. One exceptional class of models that could work is pointed out, in which metastable dark matter decays to a highly boosted lighter dark matter particle, that can interact in the Earth to produce the observed events.

arXiv comment12 pages, 5 figures

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• 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
• POEMMA's Target of Opportunity Sensitivity to Cosmic Neutrino Transient Sources
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• A search for IceCube events in the direction of ANITA neutrino candidates
• Reflections On the Anomalous ANITA Events: The Antarctic Subsurface as a Possible Explanation
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• A Model of Metastable EeV Dark Matter
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• A dark matter telescope probing the 6 to 60 GHz band
• The ANITA Anomalous Events and Axion Quark Nuggets
• Explaining the ANITA events by a $L_e-L_{\tau }$ gauge model
• Prospects for discovering supersymmetric long-lived particles with MoEDAL
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• Anomalous ANITA air shower events and tau decays
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• General Treatment of Reflection of Spherical Electromagnetic Waves from a Spherical Surface and its Implications for the ANITA Anomalous Polarity Events
• IceCube and the origin of ANITA-IV events
• Using Secondary Tau Neutrinos to Probe Heavy Dark Matter Decays in Earth
• Constraints on energy scales from dark matter decay in a gauged $B-L$ model