Journal of High Energy Physics (Jun 2022)

FACET: a new long-lived particle detector in the very forward region of the CMS experiment

  • S. Cerci,
  • D. Sunar Cerci,
  • D. Lazic,
  • G. Landsberg,
  • F. Cerutti,
  • M. Sabaté-Gilarte,
  • M. G. Albrow,
  • J. Berryhill,
  • D. R. Green,
  • J. Hirschauer,
  • S. Kulkarni,
  • J. E. Brücken,
  • L. Emediato,
  • A. Mestvirishvili,
  • J. Nachtman,
  • Y. Onel,
  • A. Penzo,
  • O. Aydilek,
  • B. Hacisahinoglu,
  • S. Ozkorucuklu,
  • H. Sert,
  • C. Simsek,
  • C. Zorbilmez,
  • I. Hos,
  • N. Hadley,
  • A. Skuja,
  • M. Du,
  • R. Fang,
  • Z. Liu,
  • B. Isildak,
  • V. Q. Tran

DOI
https://doi.org/10.1007/JHEP06(2022)110
Journal volume & issue
Vol. 2022, no. 6
pp. 1 – 19

Abstract

Read online

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.

Keywords