Supersymmetric sphaleron configurations as the origin of the perplexing ANITA events

Anchordoqui, Luis A. (Department of Physics and Astronomy, Lehman College, City University of New York, NY, 10468, USA) (Department of Physics, Graduate Center, City University of New York, NY, 10016, USA) (Department of Astrophysics, American Museum of Natural History, NY, 10024, USA) ; Antoniadis, Ignatios (LPTHE, Sorbonne Université, CNRS, 4 Place Jussieu, Paris, 75005, France) (Albert Einstein Center, Institute for Theoretical Physics, University of Bern, Sidlerstrasse 5, Bern, CH-3012, Switzerland)

07 February 2019

Abstract: The ANITA experiment has observed two air shower events with energy ∼500PeV emerging from the Earth with exit angles of ∼30∘ . We explain ANITA events as arising from neutrino-induced supersymmetric sphaleron transitions. These high-multiplicity configurations could contain a large number of long-lived supersymmetric fermions, which can traverse the Earth and decay in the atmosphere to initiate upward-pointing air showers at large angles above the horizon. We comment on the sensitivity of new generation LHC detectors, designed to searching for displaced decays of beyond standard model long-lived particles, to test our model.

Published in: Physics letters B (2019)
Published by: Elsevier
DOI: 10.1016/j.physletb.2019.02.003
License: CC-BY-3.0

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