WIMP miracle of the second kind

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Heikinheimo , M , Tenkanen , T & Tuominen , K 2017 , ' WIMP miracle of the second kind ' , Physical Review D , vol. 96 , no. 2 , 023001 . https://doi.org/10.1103/PhysRevD.96.023001

Title: WIMP miracle of the second kind
Author: Heikinheimo, Matti; Tenkanen, Tommi; Tuominen, Kimmo
Contributor organization: Helsinki Institute of Physics
Department of Physics
Teachers' Academy
Date: 2017-07-11
Language: eng
Number of pages: 11
Belongs to series: Physical Review D
ISSN: 2470-0010
DOI: https://doi.org/10.1103/PhysRevD.96.023001
URI: http://hdl.handle.net/10138/307643
Abstract: We study dark matter production in scenarios where a scale invariant hidden sector interacts with the Standard Model degrees of freedom via a Higgs portal. lambda Phi(dagger)Phi(2). If the hidden sector is very weakly coupled to the SM but exhibits strong interactions within its own particle species, the dark matter abundance may arise as a result of a dark freeze-out occurring in the hidden sector. Because of scale invariance, the free parameters in the hidden sector are determined, and the dark matter candidate exhibits a "WIMP miracle of the second kind." Demonstrating the predictive power of scale invariance, we carry out a thorough analysis of dark matter production in several benchmark scenarios where the hidden sector contains either a scalar, fermion (sterile neutrino), or vector dark matter and discuss the observational consequences of these scenarios.
ABELL 3827
114 Physical sciences
Peer reviewed: Yes
Rights: other
Usage restriction: openAccess
Self-archived version: acceptedVersion

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