Supersymmetric B-L dark matter model and the observed anomalies in the cosmic rays

Journal Article · Wed Apr 01 04:00:00 EDT 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.79.075005· OSTI ID:21308196

Allahverdi, Rouzbeh; Richardson-McDaniel, Katherine ^[1]; Dutta, Bhaskar ^[2]; Santoso, Yudi ^[3]

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1. Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico 87131 (United States)
2. Department of Physics, Texas A and M University, College Station, Texas 77843-4242 (United States)
3. Institute for Particle Physics Phenomenology, Department of Physics, University of Durham, Durham DH1 3LE (United Kingdom)

We propose a simple model of supersymmetric dark matter that can explain recent results from PAMELA and ATIC experiments. It is based on a U(1){sub B-L} extension of the minimal supersymmetric standard model. The dark matter particle is a linear combination of the U(1){sub B-L} gaugino and Higgsino partners of Higgs fields that break the B-L around 1 TeV. The dominant mode of dark matter annihilation is to the lightest of the new Higgs fields, which has a mass in the GeV range, and its subsequent decay mainly produces taus or muons by the virtue of B-L charges. This light Higgs also results in Sommerfeld enhancement of the dark matter annihilation cross section, which can be > or approx. 10{sup 3}. For a dark matter mass in the 1-2 TeV range, the model provides a good fit to the PAMELA data and a reasonable fit to the ATIC data. We also briefly discuss the prospects of this model for direct detection experiments and the LHC.

• OSTI ID: 21308196
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 7 Vol. 79; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
CERN LHC
COSMIC RADIATION
CROSS SECTIONS
DETECTION
GEV RANGE
HIGGS BOSONS
HIGGS MODEL
MASS
MUONS
NONLUMINOUS MATTER
PARTICLE DECAY
STANDARD MODEL
SUPERSYMMETRY
TEV RANGE 01-10
U-1 GROUPS