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Title: Unified TeV Scale Picture of Baryogenesis and Dark Matter

Abstract

We present a simple extension of the minimal supersymmetric standard model which provides a unified picture of cosmological baryon asymmetry and dark matter. Our model introduces a gauge singlet field N and a color triplet field X which couple to the right-handed quark fields. The out-of-equilibrium decay of the Majorana fermion N mediated by the exchange of the scalar field X generates adequate baryon asymmetry for M{sub N}{approx}100 GeV and M{sub X}{approx}TeV. The scalar partner of N (denoted N-tilde{sub 1}) is naturally the lightest SUSY particle as it has no gauge interactions and plays the role of dark matter. The model is experimentally testable in (i) neutron-antineutron oscillations with a transition time estimated to be around 10{sup 10}sec (ii) discovery of colored particles X at LHC with mass of order TeV, and (iii) direct dark matter detection with a predicted cross section in the observable range.

Authors:
 [1];  [2];  [3]
  1. Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078 (United States)
  2. Department of Physics, University of Maryland, College Park, Maryland 20742 (United States)
  3. Department of Physics, University of Florida, Gainesville, Florida 32611 (United States)
Publication Date:
OSTI Identifier:
20951246
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 16; Other Information: DOI: 10.1103/PhysRevLett.98.161301; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ASYMMETRY; BARYONS; CERN LHC; COLOR MODEL; CROSS SECTIONS; GEV RANGE 100-1000; MAJORANA THEORY; NEUTRON-ANTINEUTRON INTERACTIONS; NONLUMINOUS MATTER; PARTICLE DECAY; PARTICLE PRODUCTION; QUARKS; SCALAR FIELDS; SPARTICLES; STANDARD MODEL; SUPERSYMMETRY; TEV RANGE 01-10; TRIPLETS

Citation Formats

Babu, K. S., Mohapatra, R. N., and Nasri, Salah. Unified TeV Scale Picture of Baryogenesis and Dark Matter. United States: N. p., 2007. Web. doi:10.1103/PHYSREVLETT.98.161301.
Babu, K. S., Mohapatra, R. N., & Nasri, Salah. Unified TeV Scale Picture of Baryogenesis and Dark Matter. United States. doi:10.1103/PHYSREVLETT.98.161301.
Babu, K. S., Mohapatra, R. N., and Nasri, Salah. Fri . "Unified TeV Scale Picture of Baryogenesis and Dark Matter". United States. doi:10.1103/PHYSREVLETT.98.161301.
@article{osti_20951246,
title = {Unified TeV Scale Picture of Baryogenesis and Dark Matter},
author = {Babu, K. S. and Mohapatra, R. N. and Nasri, Salah},
abstractNote = {We present a simple extension of the minimal supersymmetric standard model which provides a unified picture of cosmological baryon asymmetry and dark matter. Our model introduces a gauge singlet field N and a color triplet field X which couple to the right-handed quark fields. The out-of-equilibrium decay of the Majorana fermion N mediated by the exchange of the scalar field X generates adequate baryon asymmetry for M{sub N}{approx}100 GeV and M{sub X}{approx}TeV. The scalar partner of N (denoted N-tilde{sub 1}) is naturally the lightest SUSY particle as it has no gauge interactions and plays the role of dark matter. The model is experimentally testable in (i) neutron-antineutron oscillations with a transition time estimated to be around 10{sup 10}sec (ii) discovery of colored particles X at LHC with mass of order TeV, and (iii) direct dark matter detection with a predicted cross section in the observable range.},
doi = {10.1103/PHYSREVLETT.98.161301},
journal = {Physical Review Letters},
number = 16,
volume = 98,
place = {United States},
year = {Fri Apr 20 00:00:00 EDT 2007},
month = {Fri Apr 20 00:00:00 EDT 2007}
}
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