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arXiv · 2510.11816

A SHIFT of Perspective: Observing Neutrinos at CMS and ATLAS

Alfonso Garcia-Soto·Jeremi Niedziela
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Abstract

The SHIFT@LHC proposal introduced a novel shifted gaseous fixed-target concept at the LHC to search for exotic particles. In this letter, we explore an entirely different physics opportunity enabled by this setup: the observation of neutrinos in general-purpose LHC detectors. Using simulations of proton-gas collisions, hadron propagation, and neutrino interactions, we estimate that $O(10^4)$ muon-neutrino and $O(10^3)$ electron-neutrino interactions, with energies from 20 GeV to 1 TeV, would occur in the CMS and ATLAS detectors with 1% of the LHC Run 4 integrated luminosity ($\approx4\cdot10^{25}$ protons-on-target). This unique configuration provides access to hadron production in the pseudorapidity range $5<\eta<8$, complementary to existing LHC detectors. If realized, this would mark the first detection of neutrinos in a hadron collider detector, demonstrating the feasibility of such measurements in this experimental environment.

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Alfonso Garcia-Soto, Jeremi Niedziela. 2025-10-13. A SHIFT of Perspective: Observing Neutrinos at CMS and ATLAS. https://doi.org/10.1103/rv6s-9wzt

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