Muon neutrino interaction studies with SND@LHC detector
G. Paggi*  on behalf of the SND@LHC Collaboration
*: corresponding author
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Pre-published on: December 19, 2025
Published on:
Abstract
The Scattering and Neutrino Detector at LHC (SND@LHC) is a compact, standalone experiment located in the TI18 tunnel, 480 meters downstream of the ATLAS interaction point, designed to observe neutrinos produced in LHC proton-proton collisions. The SND@LHC detector allows for the identification of all three flavours of neutrino interactions in the pseudorapidity region $7.2 < \eta < 8.4 $ within an unexplored energy range of $100\, \rm GeV < E < 1 \,TeV$. The SND@LHC detector comprises three main sections: an instrumented target, a hadron calorimeter, and a muon system.
This talk presented the status of the most interesting activities of the collaboration, with a focus on muon neutrino seach in 2024 data. Compared to the 2022-23 dataset, which enabled the first observation of accelerator neutrinos, this analysis benefits from several significant improvements. The recorded luminosity in 2024 is more than three times larger than in 2022, leading to an expected number of neutrino interactions in the detector of the order of thousands. Additionally, the installation of a veto plane during the 2023–2024 Year-End Technical Stop enhanced target coverage and significantly improved background rejection. Another key advancement is the calibration of the calorimeter, made possible by a dedicated test beam campaign. This calibration not only enables precise energy estimation for recorded events but also provides an additional tool for background suppression, allowing better exploitation of the instrumented volume.
DOI: https://doi.org/10.22323/1.485.0144
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