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Dark unification: A UV-complete theory of asymmetric dark matter

Murgui, Clara and Zurek, Kathryn M. (2022) Dark unification: A UV-complete theory of asymmetric dark matter. Physical Review D, 105 (9). Art. No. 095002. ISSN 2470-0010. doi:10.1103/PhysRevD.105.095002.

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Motivated by the observed ratio of dark matter to baryon mass densities, ρ_D/ρ_B≃5, we propose a theory of dark-color unification. In this theory, the dark to visible baryon masses are fixed by the ratio of dark to visible confinement scales, which are determined to be nearby in mass through the unification of the dark and visible gauge theories at a high scale. Together with a mechanism for dark baryogenesis, which arises naturally from the grand unification sector, the mass densities of the two sectors must be nearby, explaining the observed mass density of dark matter. We focus on the simplest possible example of such a theory, where the Standard Model color SU(3)_C is unified with the dark color SU(2)_D into SU(5) at an intermediate scale of around 10⁸–10⁹  GeV. The dark baryon consists of two dark quarks in an isotriplet configuration. There are a range of important cosmological, astrophysical, and collider signatures to explore, including dark matter self-interactions, early matter domination from the dark hadrons, gravitational wave signatures from the hidden sector phase transition, contributions to flavor observables, as well as Hidden-Valley-like signatures at colliders.

Item Type:Article
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URLURL TypeDescription Paper
Murgui, Clara0000-0002-7087-4796
Zurek, Kathryn M.0000-0002-2629-337X
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 28 January 2022; accepted 29 March 2022; published 4 May 2022. We thank Andrea Mitridate, Michele Papucci, and Mario Reig for discussions, as well as Pavel Fileviez-Perez and Mark B. Wise for comments on the draft. The work of K. Z. is supported by the DOE under Contract No. DE-SC0011632, and by a Simons Investigator award. This work is also supported by the Walter Burke Institute for Theoretical Physics.
Group:Walter Burke Institute for Theoretical Physics
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Department of Energy (DOE)DE-SC0011632
Simons FoundationUNSPECIFIED
Walter Burke Institute for Theoretical Physics, CaltechUNSPECIFIED
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Issue or Number:9
Record Number:CaltechAUTHORS:20220113-234602504
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:112904
Deposited By: George Porter
Deposited On:14 Jan 2022 19:26
Last Modified:03 Jun 2022 21:20

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