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Dark matter monopoles, vectors and photons

Khoze, Valentin V.; Ro, Gunnar

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Gunnar Ro


In a secluded dark sector which is coupled to the Standard Model via a Higgs portal interaction we arrange for the existence of ’t Hooft-Polyakov magnetic monopoles and study their implications for cosmology. We point out that a dark sector which can accommodate stable monopoles will also contain massless dark photons γ ′ as well as charged massive vector bosons W ± ′. The dark matter in this scenario will be a combination of magnetically and electrically charged species under the unbroken U(1) subgroup of the dark sector. We estimate the cosmological production rate of monopoles and the rate of monopole-anti-monopole annihilation and conclude that monopoles with masses of few hundred TeV or greater, can produce sizeable contributions to the observed dark matter relic density. We scan over the parameter space and compute the relic density for monopoles and vector bosons. Turning to dark photons, we compute their contribution to the measured density of relativistic particles N eff and also apply observational constraints from the Bullet cluster and other large scale galaxies on long-range interactions of monopoles and of dark vector bosons. At scales relevant for dwarf galaxies we identify regions on the parameter space where self-interacting monopole and vector dark mater components can aid solving the core-vs-cusp and the too-big-to-fail problems.


Khoze, V. V., & Ro, G. (2014). Dark matter monopoles, vectors and photons. Journal of High Energy Physics, 2014(10), Article 61.

Journal Article Type Article
Acceptance Date Sep 14, 2014
Publication Date Oct 9, 2014
Deposit Date Apr 23, 2015
Publicly Available Date Apr 24, 2015
Journal Journal of High Energy Physics
Print ISSN 1126-6708
Publisher Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Peer Reviewed Peer Reviewed
Volume 2014
Issue 10
Article Number 61
Keywords Beyond Standard Model, Cosmology of Theories beyond the SM, Solitons monopoles and instantons.


Published Journal Article (712 Kb)

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Copyright Statement
Open Access, © The Authors. Article funded by SCOAP3.
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.

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