LLP2026: 16th workshop of the Long-Lived Particle Community

A SHIFT of Perspective: Observing Neutrinos at CMS and ATLAS

Not scheduled

20m

Ray Dolby Centre

Poster Reception and Poster Session

Speaker

Jeremi Niedziela (Vrije Universiteit Brussel (BE))

Description

We investigate the physics potential of SHIFT@LHC, a proposed gaseous fixed target installed in the LHC tunnel, as a novel source of detectable neutrinos. 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, spanning energies from 20 GeV to 1 TeV, would occur in the CMS and ATLAS detectors with 1% of the LHC Run-4 integrated luminosity. This unique configuration provides access to hadron production in the pseudorapidity range 5<η<8, complementary to existing LHC detectors. If realized, this would mark the first detection of neutrinos in a general-purpose LHC detector, opening a new avenue to study neutrino production and interactions in a regime directly relevant to atmospheric neutrino experiments.