Speaker
Description
Most existing and proposed high energy neutrino experiments have excellent muon charge identification capabilities, enabling the distinction of $\nu_\mu$ and $\overline{\nu}_\mu$ charged current interactions. In contrast, distinguishing $e^\pm$ from $\nu_e$ and $\overline{\nu}_e$ interactions is typically impossible, as they interact quickly within the characteristically dense detector material, failing to reach the spectrometer. However, installing a compact and cost-effective plastic target right before the spectrometer would enable the first separate measurement of $\nu_e$ and $\overline{\nu}_\mu$ cross sections at high energy, and excellent signal identification is obtained by training a boosted decision tree to identify the signal events from neutral current and muon charged current backgrounds. At collider neutrino experiments such as FASER, the Forward Physics Facility, or SHiP, the proposed auxiliary detector opens new opportunities for studying forward particle production at collider neutrino experiments. In particular, it allows constraining forward $\Lambda$ hyperon production at the LHC, thus helping to reduce flux uncertainties also for the combined $\nu_e+\overline{\nu}_e$ measurement of the main detector.
| Contribution types | Short talk (15min + 5min Q/A) |
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