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- Title
The light radion window.
- Authors
Abu-Ajamieh, Fayez; Lee, Jun Seok; Terning, John
- Abstract
Inspired by the Contino-Pomarol-Rattazzi mechanism we explore scenarios with a very light (1 keV to 10 GeV) radion which could be associated with the suppression of the electroweak contribution to vacuum energy. We construct explicit, realistic models that realize this mechanism and explore the phenomenological constraints on this class of models. Compared with axion-like particles in this mass range, the bounds from SN 1987a and from cosmology can be much weaker, depending on the mass of the radion and its coupling to other particles. With couplings suppressed by a scale lower than 100 TeV, much of the mass window from 100 keV to 10 GeV is still open.
- Subjects
VACUUM energy (Astronomy); ELECTROWEAK interactions; PHENOMENOLOGICAL theory (Physics); AXIONS; STANDARD model (Nuclear physics)
- Publication
Journal of High Energy Physics, 2018, Vol 2018, Issue 10, p1
- ISSN
1126-6708
- Publication type
Article
- DOI
10.1007/JHEP10(2018)050