Speaker
Description
Ultra-high-energy extraterrestrial neutrinos can be used to study energetic processes taking place in the vicinity of astrophysical objects and in the intergalactic medium. They are useful to search for signs of Beyond the Standard Model physics, since energies of $E > 10^{17}$ eV cannot be attained by current particle accelerators.
The Giant Radio Array for Neutrino Detection (GRAND) will detect extensive air showers induced by the decay of tau leptons due to the interaction of high-energy neutrinos with the surface of the Earth. It consists of an array of antennas covering an area of 200000 km$^2$. The projected integrated 10-year all-flavour sensitivity is $\sim 4 \times 10^{-11} \; \mathrm{GeV} \, \mathrm{cm}^{-2} \, \mathrm{s}^{-1}$ above $4 \times 10^{17}$ eV, with sub-degree angular resolution. The detection of cosmogenic neutrinos with GRAND is guaranteed. Moreover, sources of neutrinos produced in ultra-high-energy cosmic-ray accelerators are also expected to be detected. In this talk I will present the preliminary design and the physics capabilities of the experiment, as well as the status of the ongoing efforts.
