Erschienen:
Springer Science and Business Media LLC, 2023
Erschienen in:Journal of High Energy Physics
Sprache:
Englisch
DOI:
10.1007/jhep01(2023)042
ISSN:
1029-8479
Entstehung:
Anmerkungen:
Beschreibung:
<jats:title>A<jats:sc>bstract</jats:sc>
</jats:title><jats:p>The Future Circular hadron Collider (FCC-hh) is a proposed successor of the Large Hadron Collider (LHC). FCC-hh would push both the energy and intensity frontiers of searches for new physics particles. In particular, due to higher energy and luminosity than at the LHC, at FCC-hh there would be produced around ≃ 30 times larger amount of <jats:italic>B</jats:italic> mesons and ≃ 120 times of <jats:italic>W</jats:italic> bosons, which then may decay into feebly interacting particles. In this paper we demonstrate the potential of FCC-hh by studying its sensitivity to heavy neutral leptons (HNLs) with masses <jats:italic>m</jats:italic><jats:sub><jats:italic>N</jats:italic></jats:sub><jats:italic>< m</jats:italic><jats:sub><jats:italic>B</jats:italic></jats:sub>. We consider various locations of a displaced decay volume embedded in the planned infrastructure of FCC-hh. We demonstrate that FCC-hh may substantially improve the reach of the parameter space of HNLs as compared to the searches proposed at the LHC.</jats:p>