Speaker
Description
The flavor composition of high-energy neutrinos carries important information about their birth, propagation, and detection. The Glashow resonant interaction $\bar{\nu}_e + e^-\to W^-$ provides a powerful method to differentiate neutrinos and antineutrinos, which expands the potential of flavor composition studies. Proposed tau air shower neutrino telescopes aim to detect earth-skimming and mountain-skimming tau neutrinos above PeV. Given the decay channel $W^-\to \bar{\nu}_\tau+\tau^-$, such experiments would also be sensitive to $\bar{\nu}_e$ via the Glashow resonant interaction, thus providing a measurement of the $\bar{\nu}_e$ and $\nu_\tau+\bar{\nu}_\tau$ ratios. In this talk, I will discuss the prospects of measuring the flavor ratio and project the sensitivity of the proposed telescopes.
