skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Cogenerating and pre-annihilating dark matter by a new gauge interaction in a unified model

Abstract

Here, grand unified theories based on large groups (with rank ≥ 6) are a natural context for dark matter models. They contain Standard-Model-singlet fermions that could be dark matter candidates, and can contain new non-abelian interactions whose sphalerons convert baryons, leptons, and dark matter into each other, ''cogenerating" a dark matter asymmetry comparable to the baryon asymmetry. In this paper it is shown that the same non-abelian interactions can ''pre-annihilate" the symmetric component of heavy dark matter particles χ, which then decay late into light stable dark matter particles ζ that inherit their asymmetry. We derive cosmological constraints on the parameters of such models. The mass of χ must be < 3000 TeV and their decays must happen when 2 × 10–7 < Tdec/mχ < 10–4. It is shown that such decays can come from d=5 operators with coefficients of order 1/MGUT or 1/MPℓ. We present a simple realization of our model based on the group SU(7).

Authors:
 [1];  [2]
  1. Univ. of Delaware, Newark, DE (United States)
  2. Vanderbilt Univ., Nashville, TN (United States)
Publication Date:
Research Org.:
Vanderbilt Univ., Nashville, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1436124
Grant/Contract Number:  
SC0011981
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
Journal Volume: 2016; Journal Issue: 05; Journal ID: ISSN 1475-7516
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; dark matter theory; baryon asymmetry; leptogenesis

Citation Formats

Barr, S. M., and Scherrer, Robert J. Cogenerating and pre-annihilating dark matter by a new gauge interaction in a unified model. United States: N. p., 2016. Web. doi:10.1088/1475-7516/2016/05/065.
Barr, S. M., & Scherrer, Robert J. Cogenerating and pre-annihilating dark matter by a new gauge interaction in a unified model. United States. doi:10.1088/1475-7516/2016/05/065.
Barr, S. M., and Scherrer, Robert J. Tue . "Cogenerating and pre-annihilating dark matter by a new gauge interaction in a unified model". United States. doi:10.1088/1475-7516/2016/05/065. https://www.osti.gov/servlets/purl/1436124.
@article{osti_1436124,
title = {Cogenerating and pre-annihilating dark matter by a new gauge interaction in a unified model},
author = {Barr, S. M. and Scherrer, Robert J.},
abstractNote = {Here, grand unified theories based on large groups (with rank ≥ 6) are a natural context for dark matter models. They contain Standard-Model-singlet fermions that could be dark matter candidates, and can contain new non-abelian interactions whose sphalerons convert baryons, leptons, and dark matter into each other, ''cogenerating" a dark matter asymmetry comparable to the baryon asymmetry. In this paper it is shown that the same non-abelian interactions can ''pre-annihilate" the symmetric component of heavy dark matter particles χ, which then decay late into light stable dark matter particles ζ that inherit their asymmetry. We derive cosmological constraints on the parameters of such models. The mass of χ must be < 3000 TeV and their decays must happen when 2 × 10–7 < Tdec/mχ < 10–4. It is shown that such decays can come from d=5 operators with coefficients of order 1/MGUT or 1/MPℓ. We present a simple realization of our model based on the group SU(7).},
doi = {10.1088/1475-7516/2016/05/065},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 05,
volume = 2016,
place = {United States},
year = {2016},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Figures / Tables:

Table 1 Table 1: The decomposition under SU(5) × SU(2) of the fermion multiplets of a family. The superscripts 0, ±1, ±2 are the values of X.

Save / Share:

Figures / Tables found in this record:

    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.