PoS - Proceedings of Science
Volume 449 - The European Physical Society Conference on High Energy Physics (EPS-HEP2023) - T10 Searches for New Physics
The SHADOWS experiment at the CERN SPS
S. Roy*  on behalf of the SHADOWS collaboration
Full text: pdf
Pre-published on: January 26, 2024
Published on: March 21, 2024
SHADOWS (Search for Hidden And Dark Objects With the SPS) is a
proposed proton beam-dump experiment for the search of a large variety
of feebly-interacting particles (FIPs) at the CERN SPS. It will exploit the
potential for searches and discoveries at the intensity frontier offered by
the upgrade of the ECN3 beam line.
SHADOWS will be located off-axis, which allows the suppression of the
background, and will collect data from up to 5x10$^{19}$ protons of 400~GeV on
target in 4 years of operations. The conceived detector, with a
transversal size of 2.5$\times$2.5 m$^2$ and a length of 34m, offers excellent
tracking and timing performances for the identification and reconstruction
of most of the visible final states of FIP decays.
SHADOWS allows to explore a large region in parameter space of many
FIPs, like light dark scalars, axion-like particles and heavy neutral
leptons, with masses ranging between 0.1 and 5 GeV.
It will be possibly complemented by a dedicated neutrino experiment
(NaNu@SHADOWS) to further extend the physics reach, in particular for
the study of tau-neutrino events. This article reports about the status and overview of the SHADOWS experiment.
DOI: https://doi.org/10.22323/1.449.0465
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