Two component dark matter

We explain the PAMELA positron excess and the PPB-BETS/ATIC e+ + e- data using a simple two component dark matter model (2DM). The two particle species in the dark matter sector are assumed to be in thermal equilibrium in the early universe. While one particle is stable and is the present day dark m...

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Detalles Bibliográficos
Autores principales: Fairbairn, Malcolm, Zupan, Jure
Lenguaje:eng
Publicado: 2008
Materias:
Astrophysics and Astronomy
Acceso en línea:https://dx.doi.org/10.1088/1475-7516/2009/07/001
http://cds.cern.ch/record/1136025
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author Fairbairn, Malcolm
Zupan, Jure
author_facet Fairbairn, Malcolm
Zupan, Jure
author_sort Fairbairn, Malcolm
collection CERN
description We explain the PAMELA positron excess and the PPB-BETS/ATIC e+ + e- data using a simple two component dark matter model (2DM). The two particle species in the dark matter sector are assumed to be in thermal equilibrium in the early universe. While one particle is stable and is the present day dark matter, the second one is metastable and decays after the universe is 10^-8 s old. In this model it is simple to accommodate the large boost factors required to explain the PAMELA positron excess without the need for large spikes in the local dark matter density. We provide the constraints on the parameters of the model and comment on possible signals at future colliders.
id cern-1136025
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2008
record_format invenio
spelling cern-11360252023-03-17T03:33:33Zdoi:10.1088/1475-7516/2009/07/001http://cds.cern.ch/record/1136025engFairbairn, MalcolmZupan, JureTwo component dark matterDark matter with a late decaying dark partnerAstrophysics and AstronomyWe explain the PAMELA positron excess and the PPB-BETS/ATIC e+ + e- data using a simple two component dark matter model (2DM). The two particle species in the dark matter sector are assumed to be in thermal equilibrium in the early universe. While one particle is stable and is the present day dark matter, the second one is metastable and decays after the universe is 10^-8 s old. In this model it is simple to accommodate the large boost factors required to explain the PAMELA positron excess without the need for large spikes in the local dark matter density. We provide the constraints on the parameters of the model and comment on possible signals at future colliders.We explain the PAMELA positron excess and the PPB-BETS/ATIC e+ + e- data using a simple two component dark matter model (2DM). The two particle species in the dark matter sector are assumed to be in thermal equilibrium in the early universe. While one particle is stable and is the present day dark matter, the second one is metastable and decays after the universe is 10^-8 s old. In this model it is simple to accommodate the large boost factors required to explain the PAMELA positron excess without the need for large spikes in the local dark matter density. We provide the constraints on the parameters of the model and comment on possible signals at future colliders.arXiv:0810.4147oai:cds.cern.ch:11360252008-10-24
spellingShingle Astrophysics and Astronomy
Fairbairn, Malcolm
Zupan, Jure
Two component dark matter
title Two component dark matter
title_full Two component dark matter
title_fullStr Two component dark matter
title_full_unstemmed Two component dark matter
title_short Two component dark matter
title_sort two component dark matter
topic Astrophysics and Astronomy
url https://dx.doi.org/10.1088/1475-7516/2009/07/001
http://cds.cern.ch/record/1136025
work_keys_str_mv AT fairbairnmalcolm twocomponentdarkmatter
AT zupanjure twocomponentdarkmatter
AT fairbairnmalcolm darkmatterwithalatedecayingdarkpartner
AT zupanjure darkmatterwithalatedecayingdarkpartner

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