Search for the dipole portal of heavy neutral leptons at future colliders

A bstract In this paper, we study the potential of future colliders to explore the parameter space of heavy neutral leptons (HNLs) through the dipole portal. We consider hadron colliders such as the LHC in the high luminosity phase and FCC-hh, and lepton colliders, such as FCC-ee. We consider variou...

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Bibliographic Details
Published in:The journal of high energy physics 2023-07, Vol.2023 (7), p.39-23, Article 39
Main Authors: Ovchynnikov, Maksym, Zhu, Jing-Yu
Format: Article
Language:English
Subjects:
Classical and Quantum Gravitation
Dipoles
Elementary Particles
Energy
Experiments
High energy physics
Leptons
Luminosity
Non-Standard Neutrino Properties
Phenomenology
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
Sterile or Heavy Neutrinos
String Theory
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Summary:A bstract In this paper, we study the potential of future colliders to explore the parameter space of heavy neutral leptons (HNLs) through the dipole portal. We consider hadron colliders such as the LHC in the high luminosity phase and FCC-hh, and lepton colliders, such as FCC-ee. We consider various signatures for the HNLs, including the missing energy signature and displaced decays, and discuss the complementarity between the hadron and lepton colliders. We propose new selection rules which may significantly reduce the background events in FCC-ee. In particular, we find that thanks to a much clearer environment, FCC-ee may search for the HNLs with masses up to ≃ 30 GeV and proper lifetimes cτ N ≳ 1 cm, which is well beyond the reach of the experiments to be launched in the next decade.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP07(2023)039