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Astrophysical signatures of asymmetric dark matter bound states

Gresham, Moira I. and Lou, Hou Keong and Zurek, Kathryn M. (2018) Astrophysical signatures of asymmetric dark matter bound states. Physical Review D, 98 (9). Art. No. 096001. ISSN 2470-0010. doi:10.1103/physrevd.98.096001.

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Nuggets—very large stable bound objects arising in the presence of a sufficiently attractive and long-range force and in the absence of a dark Coulomb force—are a smoking gun signature for asymmetric dark matter (ADM). The cosmology of ADM nuggets is both generic and unique: nuggets feature highly exothermic fusion processes, which can impact the shape of the core in galaxies, as well as give rise to rare dark star formation. We find, considering the properties of nuggets in a generic extended nuclear model with both attractive and repulsive forces, that self-interaction constraints place an upper bound on nugget masses at the freeze-out of synthesis in the ballpark of M_(fo) ≲ 10^(16) GeV. We also show that indirect detection strongly constrains models where the scalar mediator binding the nuggets mixes with the Higgs.

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Additional Information:Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3. (Received 25 May 2018; published 5 November 2018) We thank Guido D’Amico, Paolo Panci, Haibo Yu, and Yiming Zhong for very helpful discussions on gravothermal collapse in the presence of inelastic interactions, Dorota Grabowska, Ahmet Coskuner and Simon Knapen for collaboration on prospects to detect nuggets in direct detection experiments, and Ethan Neil and Matthew McCullough for discussions on low-N bottlenecks. H. K. L. and K. M. Z. are supported by the DoE under Contract No. DE-AC02-05CH11231. M. I. G. is supported by the NSF under Award No. 1719780.
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Department of Energy (DOE)DE-AC02-05CH11231
Issue or Number:9
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:96437
Deposited By: George Porter
Deposited On:18 Jun 2019 23:10
Last Modified:16 Nov 2021 17:20

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