The SHiP (Search for Hidden Particles)
is a newly proposed experiment at CERN aiming at searching for hidden particles
using the intense proton beam of the SPS accelerator.
It will cover the ˇ°cosmological interestingˇ± region of the parameter space
near the super-weak coupling down to 10-10.
The SHiP is designed to search in particular for feebly interacting particles (FIPs)
with mass from sub-GeV up to O(10) GeV such as Heavy Neutral Leptons (HNLs),
dark photons, dark scalar, light dark matter (LDM) and other FIPs.
These particles would be produced in a proton beam dump at high intensity 400 GeV
from decay of charm or beauty particles.
The SHiP detector is sensitive both to decay and scattering signatures of models
with these hidden long-lived particles (LLPs).
The detector (total length is about 120m) consists of long evacuated decay volume (~50m vacuum vessel),
which is followed by magnetic spectrometer, a calorimeter and muon detectors
in order to allow full reconstruction and particle identification.
In addition, the SHiP can perform unprecedented measurements with tau neutrinos
and neutrino-induced charm production.
For this purpose, the emulsion target (ντ detector) surrounded by a magnetic field
is located upstream of the decay volume. About 10,000 tau and anti-tau neutrinos
are expected to be observed with an integrated 2 x 1020 protons on target.
The anti-tau neutrinos can be observed for the first time.
And the SHiP can also probe the existence of LDM through the observation
of its scattering off electrons in the emulsion detector.