Advanced search
Start date
Betweenand
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Z(2) SIMP dark matter

Full text
Author(s):
Bernal, Nicolas [1] ; Chu, Xiaoyong [2]
Total Authors: 2
Affiliation:
[1] Univ Estadual Paulista, Inst Fis Teor, ICTP South Amer Inst Fundamental Res, Rua Pamplona 145, BR-01405 Sao Paulo - Brazil
[2] ICTP Int Ctr Theoret Phys, Str Costiera 11, I-34014 Trieste - Italy
Total Affiliations: 2
Document type: Journal article
Source: Journal of Cosmology and Astroparticle Physics; n. 1 JAN 2016.
Web of Science Citations: 42
Abstract

Dark matter with strong self-interactions provides a compelling solution to several small-scale structure puzzles. Under the assumption that the coupling between dark matter and the Standard Model particles is suppressed, such strongly interacting massive particles (SIMPs) allow for a successful thermal freeze-out through N-to-N' processes, where N dark matter particles annihilate to N' of them. In the most common scenarios, where dark matter stability is guaranteed by a Z(2) symmetry, the seemingly leading annihilating channel, i.e. 3-to- 2 process, is forbidden, so the 4-to-2 one dominate the production of the dark matter relic density. Moreover, cosmological observations require that the dark matter sector is colder than the thermal bath of Standard Model particles, a condition that can be dynamically generated via a small portal between dark matter and Standard Model particles, a la freeze-in. This scenario is exempli fied in the context of the Singlet Scalar dark matter model. (AU)

FAPESP's process: 11/11973-4 - ICTP South American Institute for Fundamental Research: a regional center for theoretical physics
Grantee:Nathan Jacob Berkovits
Support type: Research Projects - Thematic Grants