Heavy light inflaton and dark matter production
Abstract
We study the minimal extension of the Standard Model by a scalar with quartic interaction serving as an inflaton. For the model where scale symmetry is broken only in the inflaton sector, the mass of the inflaton is constrained to be relatively low. Here, we analyze the previously omitted situation of the inflaton masses mχ≳250 GeV . Then, we provide a window of inflaton masses with viable inflationary properties that evade direct observational constraints due to the small inflaton mixing with the Higgs sector. The addition of heavy neutral leptons with Majorana masses induced by the interaction with the inflaton allow for cold dark matter in the model with masses O (1 -10 ) MeV .
- Publication:
-
Physical Review D
- Pub Date:
- December 2020
- DOI:
- 10.1103/PhysRevD.102.115011
- arXiv:
- arXiv:2010.06358
- Bibcode:
- 2020PhRvD.102k5011B
- Keywords:
-
- High Energy Physics - Phenomenology
- E-Print:
- 9 pages, 4 figures