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Darkogenesis: A baryon asymmetry from the dark matter sector

Shelton, Jessie and Zurek, Kathryn M. (2010) Darkogenesis: A baryon asymmetry from the dark matter sector. Physical Review D, 82 (12). Art. No. 123512. ISSN 1550-7998.

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In standard models of baryogenesis and of dark matter, the mechanisms which generate the densities in both sectors are unrelated to each other. In this paper we explore models which generate the baryon asymmetry through the dark matter sector, simultaneously relating the baryon asymmetry to the dark matter density. In the class of models we explore, a dark matter asymmetry is generated in the hidden sector through a first-order phase transition. Within the hidden sector, it is easy to achieve a sufficiently strong first-order phase transition and large enough CP violation to generate the observed asymmetry. This can happen above or below the electroweak phase transition, but in both cases significantly before the dark matter becomes nonrelativistic. We study examples where the asymmetric dark matter density is then transferred to the baryons both through perturbative and nonperturbative communication mechanisms, and show that in both cases cosmological constraints are satisfied while a sufficient baryon asymmetry can be generated.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Shelton, Jessie0000-0002-0959-6360
Zurek, Kathryn M.0000-0002-2629-337X
Alternate Title:Darkogenesis
Additional Information:© 2010 The American Physical Society. (Received 24 August 2010; published 9 December 2010) We thank R. Gran for comments about Super-Kamiokande constraints, and M. Buckley, H. Davoudiasl, R. Harnik, G. Kribs, D. Morrissey, L. Randall, J. Thaler, W. Skiba, and T. Volansky for useful comments and discussions. We thank the Aspen Center for Physics (J. S. and K. M. Z.) and SLAC (J. S.) for hospitality during the final stages of this work. J. S. was supported in part by DOE Grant No. DE-FG02-92ER40704.
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG02-92ER40704
Issue or Number:12
Classification Code:PACS numbers: 95.35.+d
Record Number:CaltechAUTHORS:20190613-110921691
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:96377
Deposited By: George Porter
Deposited On:17 Jun 2019 16:21
Last Modified:25 Jun 2020 16:56

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