Ponente
Descripción
The detection of astrophysical $\nu_\tau$ is an important verification of the observed flux of high-energy neutrinos. A flavour ratio of $\nu_{e} : \nu_\mu : \nu_\tau \approx 1 : 1 : 1$ is predicted for astrophysical neutrinos measured at Earth due to neutrino oscillations. On top of this, the $\nu_\tau$ offers a unique channel for neutrino astronomy due to absence of an atmospheric $\nu_\tau$ background contribution. When a $\nu_\tau$ interacts it produces a particle shower and often a $\tau$ lepton which in turn decays mainly into another shower. This results in a double shower signature. An excellent angular resolution can be achieved when both shower vertices are reconstructed. The main challenge lies in identifying two showers when the $\tau$ energy and travelling length are small. The KM3NeT/ARCA detector, which is under construction in the Mediterranean sea, will be able to detect this signature due to its timing and spatial resolution for showers. We will discuss the reconstruction algorithms under development and the first performance estimates for detecting double showers using KM3NeT.
| Affiliation | KM3NeT |
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