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On Baryogenesis and nn-Oscillations

Herrmann, Enrico (2014) On Baryogenesis and nn-Oscillations. . (Submitted) http://resolver.caltech.edu/CaltechAUTHORS:20140902-113821429

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Abstract

We study a simple model where color sextet scalars violate baryon number at tree level but do not give rise to proton decay. In particular, we include one light and two heavy sextets with ΔB=2 baryon number violating interactions that induce neutron anti-neutron oscillations. This setup also suggests an intimate connection to the generation of the observed baryon asymmetry in the Universe via the out of equilibrium decay of the heavy sextet scalars at around 10^(14) GeV. The large SU(3)-color charges of the scalar fields involved in generating the baryon asymmetry motivate us to study potentially significant washout effects. We numerically solve a set of Boltzmann evolution equations and find restrictions on the available model parameters imposed by successful high scale baryogenesis. Combining our new numerical results for baryogenesis with nn-oscillation predictions and collider limits on the light sextet, we identify parameter regions where this model can be probed by current and future experiments.


Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription
http://arxiv.org/abs/1408.4455arXivDiscussion Paper
Additional Information:Dated: August 21, 2014. We thank Mark Wise for detailed discussions throughout the project and careful reading of the manuscript. We also acknowledge useful comments by Pavel Fileviez Perez, David Sanford and Yue Zhang. This work is supported by the DOE Grant # DE-SC0011632.
Group:Walter Burke Institute for Theoretical Physics
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC0011632
Other Numbering System:
Other Numbering System NameOther Numbering System ID
CALT-TH2014-153
Record Number:CaltechAUTHORS:20140902-113821429
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140902-113821429
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:49113
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:02 Sep 2014 19:20
Last Modified:02 Sep 2014 19:20

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