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Dark matter freeze-out during SU(2)L confinement

Howard, Jessica N. and Ipek, Seyda and Tait, Tim M. P. and Turner, Jessica (2022) 'Dark matter freeze-out during SU(2)L confinement.', Journal of High Energy Physics, 2022 (2). p. 47.


We explore the possibility that dark matter is a pair of vector-like fermionic SU(2)L doublets and propose a novel mechanism of dark matter production that proceeds through the confinement of the weak sector of the Standard Model. This confinement phase causes the Standard Model doublets and dark matter to confine into pions. The dark pions freeze-out before the weak sector deconfines and generate a relic abundance of dark matter. We solve the Boltzmann equations for this scenario to determine the scale of confinement and constituent dark matter mass required to produce the observed relic density. We determine which regions of this parameter space evade direct detection, collider bounds, and successfully produce the observed relic density of dark matter. For a TeV scale pair of vector-like fermionic SU(2)L doublets, we find the weak confinement scale to be ∼ 700 TeV.

Item Type:Article
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Publisher statement:This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
Date accepted:23 January 2022
Date deposited:05 May 2022
Date of first online publication:07 February 2022
Date first made open access:05 May 2022

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