FACET: a new long-lived particle detector in the very forward region of the CMS experiment
Abstract
We describe a proposal to add a set of very forward detectors to the CMS experiment for the high-luminosity era of the Large Hadron Collider to search for beyond the standard model long-lived particles, such as dark photons, heavy neutral leptons, axion-like particles, and dark Higgs bosons. The proposed subsystem is called FACET for Forward-Aperture CMS ExTension, and will be sensitive to any particles that can penetrate at least 50 m of magnetized iron and decay in an 18 m long, 1 m diameter vacuum pipe. The decay products will be measured in detectors using identical technology to the planned CMS Phase-2 upgrade.
- Publication:
-
Journal of High Energy Physics
- Pub Date:
- June 2022
- DOI:
- 10.1007/JHEP06(2022)110
- arXiv:
- arXiv:2201.00019
- Bibcode:
- 2022JHEP...06..110C
- Keywords:
-
- Beyond Standard Model;
- Exotics;
- Hadron-Hadron Scattering;
- Dark Matter;
- Particle and Resonance Production;
- High Energy Physics - Experiment;
- High Energy Physics - Phenomenology
- E-Print:
- 15 pages, 6 figures, in print in JHEP. The resubmission has corrected Figs. 2,5,6, as well as a few additions as a result of addressing the referee comments. It matches the final version, to appear in JHEP