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arXiv · 2606.11039

The SHiP/NA67 experiment at the ECN3 high-intensity beam facility at the CERN SPS

Matei Climescu
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Abstract

The Search for Hidden Particles (SHiP/NA67) is a general-purpose, high-intensity beam dump experiment approved in 2024 for the future exploitation of the ECN3 experimental hall at the CERN Super-Proton-Synchrotron in conjunction with the new Beam Dump Facility (BDF). It will collect $6\times10^{20}$ protons on target over $\sim$15 years of operation. SHiP is designed to probe the largely underexplored domain of feebly interacting particles with masses in the $\mathcal{O}(100~\mathrm{MeV})$ to few-GeV range, providing leading sensitivity to most models predicting particles within this range, notably heavy neutral leptons, dark photons, dark scalars, axion-like particles and light dark matter. The intense flux of neutrinos of all flavours produced in the dump additionally enables a rich Standard Model and neutrino-physics programme with notably $\mathcal{O}(10^3)$ $ν_τ$ per year of operation, thus bringing forward a study of $ν_τ$ phenomenology. This contribution summarises the physics motivation, the experimental concept and the detector subsystems, and outlines the expected sensitivity and timeline.

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Matei Climescu. 2026-06-09. The SHiP/NA67 experiment at the ECN3 high-intensity beam facility at the CERN SPS. https://arxiv.org/abs/2606.11039

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