Light dark sectors through the Fermion portal
Publication Date
2020-07-08Journal Title
Journal of High Energy Physics
Publisher
Springer Berlin Heidelberg
Volume
2020
Issue
7
Language
en
Type
Article
This Version
VoR
Metadata
Show full item recordCitation
Darmé, L., Ellis, S. A., & You, T. (2020). Light dark sectors through the Fermion portal. Journal of High Energy Physics, 2020 (7)https://doi.org/10.1007/jhep07(2020)053
Abstract
Abstract: Pairs of Standard Model fermions form dimension-3 singlet operators that can couple to new dark sector states. This “fermion portal” is to be contrasted with the lower-dimensional Higgs, vector and neutrino singlet portals. We characterise its distinct phenomenology and place effective field theory bounds on this framework, focusing on the case of fermion portals to a pair of light dark sector fermions. We obtain current and projected limits on the dimension-6 effective operator scale from a variety of meson decay experiments, missing energy and long-lived particle searches at colliders, as well as astrophysical and cosmological bounds. The DarkEFT public code is made available for recasting these limits, which we illustrate with various examples including an integrated- out heavy dark photon.
Keywords
Regular Article - Theoretical Physics, Beyond Standard Model, Effective Field Theories
Identifiers
jhep07(2020)053, 13337
External DOI: https://doi.org/10.1007/jhep07(2020)053
This record's URL: https://www.repository.cam.ac.uk/handle/1810/307808