Enhancing Neutrino Flavour Sensitivity in TRIDENT with Tau Neutrino Identification

The detection of the flavor ratio of astrophysical neutrinos provides valuable insight into the neutrino production mechanisms within astrophysical sources and serves as a powerful probe for new physics. Building on the exciting observation of seven tau neutrino candidates by the IceCube experiment in 2024, the TRopIcal DEep-sea Neutrino Telescope (TRIDENT), as a next-generation neutrino telescope, aims to enhance all-flavor neutrino detection, with a particular focus on improving sensitivity to tau neutrinos. This expects to be achieved through the recording of multi-channel waveforms from each PMT within the Hybrid Digital Optical Modules (hDOMs) as well as leveraging the reduced scattering optical properties of seawater. By identifying characteristic Double Pulse hDOM waveforms, our preliminary analysis indicates an expected detection rate of approximately 5 tau neutrinos per year in TRIDENT. Based on this projection, we also demonstrate TRIDENT's potential to determine the flavor composition of diffuse astrophysical neutrino fluxes with a 10-year observation.