University of Jyväskylä | JYX Digital Repository

  • English  | Give feedback |
    • suomi
    • English
 
  • Login
JavaScript is disabled for your browser. Some features of this site may not work without it.
View Item 
  • JYX
  • Artikkelit
  • Matemaattis-luonnontieteellinen tiedekunta
  • View Item
JYX > Artikkelit > Matemaattis-luonnontieteellinen tiedekunta > View Item

Observational constraints on decoupled hidden sectors

ThumbnailPublisher's PDF
View/Open
369.9 Kb

Downloads:  
Show download detailsHide download details  
Heikinheimo, M., Tenkanen, T., Tuominen, K., & Vaskonen, V. (2016). Observational constraints on decoupled hidden sectors. Physical Review D, 94(6), Article 063506. https://doi.org/10.1103/PhysRevD.94.063506
Published in
Physical Review D
Authors
Heikinheimo, Matti |
Tenkanen, Tommi |
Tuominen, Kimmo |
Vaskonen, Ville
Date
2016
Copyright
© 2016 American Physical Society. Published in this repository with the kind permission of the publisher.

 
We consider an extension of the Standard Model with a singlet sector consisting of a real (pseudo)scalar and a Dirac fermion coupled with the Standard Model only via the scalar portal. We assume that the portal coupling is weak enough for the singlet sector not to thermalize with the Standard Model allowing the production of singlet particles via the freeze-in mechanism. If the singlet sector interacts with itself sufficiently strongly, it may thermalize within itself, resulting in dark matter abundance determined by the freeze-out mechanism operating within the singlet sector. We investigate this scenario in detail. In particular, we show that requiring the absence of inflationary isocurvature fluctuations provides lower bounds on the magnitude of the dark sector self-interactions and in parts of the parameter space favors sufficiently large self-couplings, supported also by the features observed in the small-scale structure formation.
Publisher
American Physical Society
ISSN Search the Publication Forum
1550-7998
Keywords
extensions of the Standard Model singlet sector decoupling dark matter abundance
DOI
https://doi.org/10.1103/PhysRevD.94.063506
URI

http://urn.fi/URN:NBN:fi:jyu-201610104317

Publication in research information system

https://converis.jyu.fi/converis/portal/detail/Publication/26259247

Metadata
Show full item record
Collections
  • Matemaattis-luonnontieteellinen tiedekunta [5281]

Related items

Showing items with similar title or keywords.

  • Reheating the Standard Model from a hidden sector 

    Tenkanen, Tommi; Vaskonen, Ville (American Physical Society, 2016)
    We consider a scenario where the inflaton decays to a hidden sector thermally decoupled from the visible Standard Model sector. A tiny portal coupling between the hidden and the visible sectors later heats the visible ...
  • Extensions of the standard model scalar sector and constraints from ccolliders and cosmology 

    Vaskonen, Ville (2013)
    In this thesis we study the Higgs sector of the Standard Model and compare it to the latest data from the LHC and Tevatron experiments. Then we consider two extensions of the Higgs sector. First we extend the Standard Model ...
  • Does sector matter? : Plural characteristics and logics in third sector festival organisations 

    Ruusuvirta, Minna (Kulttuuripolitiikan tutkimuksen seura, 2019)
  • Does sector matter? Plural characteristics and logics in third sector festival organisations 

    Ruusuvirta, Minna (2019)
    The starting point for the research has been the idea that society is divided into three relatively distinct areas of activity, i.e. separate sectors: the public sector, the market sector and the third sector. According ...
  • Unbiased Inference for Discretely Observed Hidden Markov Model Diffusions 

    Chada, Neil K.; Franks, Jordan; Jasra, Ajay; Law, Kody J.; Vihola, Matti (Society for Industrial & Applied Mathematics (SIAM), 2021)
    We develop a Bayesian inference method for diffusions observed discretely and with noise, which is free of discretization bias. Unlike existing unbiased inference methods, our method does not rely on exact simulation ...
  • Browse materials
  • Browse materials
  • Articles
  • Conferences and seminars
  • Electronic books
  • Historical maps
  • Journals
  • Tunes and musical notes
  • Photographs
  • Presentations and posters
  • Publication series
  • Research reports
  • Research data
  • Study materials
  • Theses

Browse

All of JYXCollection listBy Issue DateAuthorsSubjectsPublished inDepartmentDiscipline

My Account

Login

Statistics

View Usage Statistics
  • How to publish in JYX?
  • Self-archiving
  • Publish Your Thesis Online
  • Publishing Your Dissertation
  • Publication services

Open Science at the JYU
 
Data Protection Description

Accessibility Statement

Unless otherwise specified, publicly available JYX metadata (excluding abstracts) may be freely reused under the CC0 waiver.
Open Science Centre