IceCube and the origin of ANITA-IV events

Recently, the ANITA collaboration announced detection of new, unsettling upgoing Ultra-High-Energy (UHE) events. Understanding their origin is pressing to ensure success incoming UHE neutrino program. In this work, we study internal consistency and implications lack similar events in IceCube. We introduce a generic, simple parametrization compatibility between these two observatories Standard Model-like Beyond Model scenarios: an flux particles that interact with Earth nucleons cross section $\sigma$, producing particle showers along long-lived decay lifetime $\tau$ generate shower explains observations. find angular distribution imposes significant constraints, when including null observations from IceCube only $\tau \sim 10^{-3}$ - $10^{-2} \,\mathrm{s}$ $\sigma 10^{-33}$ $10^{-32}\,\mathrm{cm^2}$ can explain data. This hypothesis testable future Finally, discuss specific model realize scenario. Our analysis highlights importance simultaneous by high-energy optical telescopes new radio detectors uncover cosmogenic neutrinos or discover physics.