SMuK 2023 – scientific programme

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T: Fachverband Teilchenphysik

T 35: Neutrino Astronomy II

T 35.3: Talk

Tuesday, March 21, 2023, 17:30–17:45, POT/0051

Neutrino detection with new triggers at the Pierre Auger Observatory* — Srijan Sehgal and •Michael Schimp for the Pierre Auger collaboration — Bergische Universität Wuppertal, Wuppertal, Germany

The Pierre Auger Observatory apart from detecting ultra-high energy comic rays is also an excellent instrument to look for highly inclined neutrino-induced air showers using its Surface Detector (SD) array. To improve the detection efficiency and to decrease the energy threshold of the array, two new SD triggers, time-over-threshold-deconvolved (ToTd) and multiplicity of positive steps (MoPS) were added in 2014.

This talk presents the work done to evaluate the effect of new triggers on the neutrino search. Events with energies below 10¹⁹ eV and in the zenith angle range of 60^∘< θ < 75^∘ are selected for both data and simulated neutrino-induced showers. The particular focus is on the improvements with the new triggers, MoPS and ToTd, to the neutrino sensitivity in comparison to previous neutrino searches at the Pierre Auger Observatory.

*Gefördert durch die BMBF Verbundforschung Astroteilchenphysik

(Vorhaben 05A20PX1)