2018/12/31 by Bhavesh Chauhan, Subhendra Mohanty · 34 citations
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Electron #Lepton #Leptoquark #Neutrino #Neutrino Physics Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Universality (dynamical systems) #hep-ph
paper · pdf · doi:10.1103/physrevd.99.095018
published in Physical review. D/Physical review. D. 99(9) (American Physical Society) · matches version accepted in Phys.Rev.D
arxiv created 2019/05/01 · openalex publication_date 2019/05/17 · arxiv updated 2019/05/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The ANITA experiment has seen anomalous Earth emergent showers of EeV energies which cannot be explained with Standard Model interactions. In addition, tests of lepton flavor universality in R(D(*)) and R(K(*)) have shown significant deviations from theoretical predictions. It is known that, among single leptoquark solutions, only the chiral vector leptoquark U1\ensuremath∼(3,1,2/3) can simultaneously address the discrepancies. In this paper, we show that the leptoquark motivated by flavor anomalies coupled to a sterile neutrino can also explain the ANITA anomalous events. We consider two scenarios, (a) the sterile neutrino, produced via resonant leptoquark mediated neutrino-nucleon interactions, propagates through the Earth without significant attenuation and decays near the surface to a \ensuremathτ lepton; and (b) a cosmogenic sterile neutrino interacts with the matter near the surface of Earth and generates a \ensuremathτ lepton. These two scenarios give significantly large survival probabilities even when regeneration effects are not taken into account. In the second scenario, the distribution of emergent tau energy peaks in the same energy range as seen by ANITA.