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Origins of hidden sector dark matter I: cosmology

Cheung, Clifford and Elor, Gilly and Hall, Lawrence J. and Kumar, Piyush (2011) Origins of hidden sector dark matter I: cosmology. Journal of High Energy Physics, 2011 (3). Art. No. 42. ISSN 1029-8479.

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We present a systematic cosmological study of a universe in which the visible sector is coupled, albeit very weakly, to a hidden sector comprised of its own set of particles and interactions. Assuming that dark matter (DM) resides in the hidden sector and is charged under a stabilizing symmetry shared by both sectors, we determine all possible origins of weak-scale DM allowed within this broad framework. We show that DM can arise only through a handful of mechanisms, lending particular focus to Freeze-Out and Decay and Freeze-In, as well as their variations involving late time re-annihilations of DM and DM particle anti-particle asymmetries. Much like standard Freeze-Out, where the abundance of DM depends only on the annihilation cross-section of the DM particle, these mechanisms depend only on a very small subset of physical parameters, many of which may be measured directly at the LHC. In particular, we show that each DM production mechanism is associated with a distinctive window in lifetimes and cross-sections for particles which may be produced in the near future. We evaluate prospects for employing the LHC to definitively reconstruct the origin of DM in a companion paper.

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Additional Information:© The Author(s) 2011. This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. Received: December 28, 2010. Accepted: February 27, 2011. Published: March 9, 2011. L.H. thanks John March-Russell and Stephen West for useful discussions. This work was supported in part by the Director, Office of Science, Office of High Energy and Nuclear Physics, of the US Department of Energy under Contract DE-AC02-05CH11231 and by the National Science Foundation on grant PHY-0457315. The work of PK is also supported in part by the US Department of Energy contract DE-FG02-92ER-40699.
Funding AgencyGrant Number
Department of Energy (DOE)DE-AC02-05CH11231
Department of Energy (DOE)DE-FG02-92ER-40699
Subject Keywords:Cosmology of Theories beyond the SM, Beyond Standard Model
Issue or Number:3
Record Number:CaltechAUTHORS:20190619-094158450
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Official Citation:Cheung, C., Elor, G., Hall, L.J. et al. J. High Energ. Phys. (2011) 2011: 42.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:96534
Deposited By: George Porter
Deposited On:19 Jun 2019 23:06
Last Modified:03 Oct 2019 21:23

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