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Baryogenesis with Higher Dimension Operators

Cheung, Clifford and Ishiwata, Koji (2013) Baryogenesis with Higher Dimension Operators. Physical Review D, 88 (1). Art. No. 017901. ISSN 1550-7998.

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We propose a simple model of baryogenesis comprised of the standard model coupled to a singlet X via higher dimension operators O. In the early universe, X is thermalized by O mediated scattering processes before it decouples relativistically and evolves into a sizable fraction of the total energy density. Eventually, X decays via O in an out of equilibrium, baryon number and CP violating process that releases entropy and achieves baryogenesis for a broad range of parameters. The decay can also produce a primordial abundance of dark matter. Because X may be as light as a TeV, viable regions of parameter space lie within reach of experimental probes of n-n oscillation, flavor physics, and proton decay.

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Additional Information:© 2013 American Physical Society. Received 5 April 2013; published 9 July 2013. This publication is funded by the Gordon and Betty Moore Foundation through GBMF Grant No. 776 to the Caltech Moore Center for Theoretical Cosmology and Physics. The work is also supported by the U.S. Department of Energy under Contract No. DE-FG02-92ER40701.
Group:Caltech Theory, Moore Center for Theoretical Cosmology and Physics
Funding AgencyGrant Number
Gordon and Betty Moore FoundationGBMF 776
Caltech Moore Center for Theoretical Cosmology and PhysicsUNSPECIFIED
Department of Energy (DOE)DE-FG02-92ER40701
Issue or Number:1
Classification Code:PACS: 11.30.Fs, 95.35.+d, 98.80.Cq
Record Number:CaltechAUTHORS:20130415-085731062
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:37928
Deposited By: Ruth Sustaita
Deposited On:15 Apr 2013 16:10
Last Modified:03 Oct 2019 04:52

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