Changes in Dark Matter Properties After Freeze-Out

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dc.creatorCohen, Timothy
dc.creatorMorrissey, David E.
dc.creatorPierce, Aaron
dc.date2008-08-29
dc.date2008-12-16
dc.date.accessioned2026-07-07T12:12:37Z
dc.date.available2026-07-07T12:12:37Z
dc.descriptionThe properties of the dark matter that determine its thermal relic abundance can be very different from the dark matter properties today. We investigate this possibility by coupling a dark matter sector to a scalar that undergoes a phase transition after the dark matter freezes out. If the value of Omega_DM h^2 calculated from parameters measured at colliders and by direct and indirect detection experiments does not match the astrophysically observed value, a novel cosmology of this type could provide the explanation. This mechanism also has the potential to account for the "boost factor" required to explain the PAMELA data.
dc.description5 pages; v2: Fixed minor typo, added short discussion of application to PAMELA and appropriate references, results unchanged
dc.identifierhttps://arxiv.org/abs/0808.3994
dc.identifierhttp://arxiv.org/abs/0808.3994
dc.identifierPhys.Rev.D78:111701,2008
dc.identifierdoi:10.1103/PhysRevD.78.111701
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/210600
dc.subjectHigh Energy Physics - Phenomenology
dc.titleChanges in Dark Matter Properties After Freeze-Out
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