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Affleck-Dine cogenesis

Cheung, Clifford and Zurek, Kathryn M. (2011) Affleck-Dine cogenesis. Physical Review D, 84 (3). Art. No. 035007. ISSN 1550-7998.

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We propose a novel framework in which the observed baryon and dark matter abundances are simultaneously generated via the Affleck-Dine mechanism. In its simplest realization, Affleck-Dine cogenesis is accomplished by a single superpotential operator and its A-term counterpart. These operators explicitly break B − L and X, the dark matter number, to the diagonal B − L + X. In the early universe these operators stabilize supersymmetric flat directions carrying nonzero B − L and X, and impart the requisite CP violation for asymmetry generation. Because B − L + X is preserved, the resulting B − L and X asymmetries are equal and opposite, though this precise relation may be relaxed if B − L and X are violated separately by additional operators. Our dark matter candidate is stabilized by R parity and acquires an asymmetric abundance due to its nonzero X number. For a dark matter mass of order a few GeV, one naturally obtains the observed ratio of energy densities today, Ω_(DM)/Ω_B ∼ 5. These theories typically predict macroscopic lifetimes for the lightest observable supersymmetric particle as it decays to the dark matter.

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Additional Information:© 2011 American Physical Society. (Received 4 June 2011; published 9 August 2011) We thank Hai-Bo Yu for collaboration during the early stages of this work. C. C. is supported in part by the Director, Office of Science, Office of High Energy and Nuclear Physics, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231 and by the National Science Foundation under Grant No. PHY-0457315.
Funding AgencyGrant Number
Department of Energy (DOE)DE-AC02-05CH11231
Issue or Number:3
Classification Code:PACS numbers: 98.80.Cq, 95.35.+d, 12.60.Jv, 11.30.Fs, 11.30.Qc
Record Number:CaltechAUTHORS:20190613-110922319
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:96384
Deposited By: George Porter
Deposited On:17 Jun 2019 14:52
Last Modified:03 Oct 2019 21:21

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