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Stable Bound States of Asymmetric Dark Matter

Wise, Mark B. and Zhang, Yue (2014) Stable Bound States of Asymmetric Dark Matter. Physical Review D, 90 (5). Art. No. 055030. ISSN 2470-0010. doi:10.1103/PhysRevD.90.055030.

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The simplest renormalizable effective field theories with asymmetric dark matter bound states contain two additional gauge singlet fields, one being the dark matter and the other a mediator particle that the dark matter annihilates into. We examine the physics of one such model with a Dirac fermion as the dark matter and a real scalar mediator. For a range of parameters the Yukawa coupling of the dark matter to the mediator gives rise to stable asymmetric dark matter bound states. We derive properties of the bound states including nuggets formed from N ≫ 1 dark matter particles. We also consider the formation of bound states in the early Universe and direct detection of dark matter bound states. Many of our results also hold for symmetric dark matter.

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Additional Information:© 2014 American Physical Society. Received 28 July 2014; published 26 September 2014. We would like to thank Sean Carroll, Clifford Cheung, Francis-Yan Cyr-Racine, Michael Ramsey-Musolf, David Sanford, Philip Schuster, and Natalia Toro for useful discussions and comments on a draft. Y. Z. thanks Xiaoyong Chu for a comment on the calculation of the bound state formation rate. This work is supported by the Gordon and Betty Moore Foundation through Grant No. 776 to the Caltech Moore Center for Theoretical Cosmology and Physics and by the DOE Grant No. DESC0011632 and also by a DOE Early Career Award under Grant No. DE-SC0010255.
Group:Walter Burke Institute for Theoretical Physics, Caltech Theory, Moore Center for Theoretical Cosmology and Physics
Funding AgencyGrant Number
Gordon and Betty Moore Foundation776
Department of Energy (DOE)DE-SC0011632
Department of Energy (DOE) Early Career AwardDE-SC0010255
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Issue or Number:5
Classification Code:PACS: 95.35.+d, 98.80.-k, 14.80.Ec
Record Number:CaltechAUTHORS:20140804-083111315
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:47868
Deposited By: Ruth Sustaita
Deposited On:04 Aug 2014 17:17
Last Modified:10 Nov 2021 17:51

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