Singlet-doublet dark matter

In light of recent data from direct detection experiments and the Large Hadron Collider, we explore models of dark matter in which an SU(2) sub(L) doublet is mixed with a standard model singlet. We impose a thermal history. If the new particles are fermions, this model is already constrained due to...

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Bibliographic Details
Published in:Physical review. D, Particles, fields, gravitation, and cosmology Particles, fields, gravitation, and cosmology, 2012-04, Vol.85 (7), Article 075003
Main Authors: Cohen, Timothy, Kearney, John, Pierce, Aaron, Tucker-Smith, David
Format: Article
Language:English
Subjects:
Constraints
Cosmology
Dark matter
Fermions
Gravitation
Large Hadron Collider
Mathematical models
Scalars
Standard model (particle physics)
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Summary:In light of recent data from direct detection experiments and the Large Hadron Collider, we explore models of dark matter in which an SU(2) sub(L) doublet is mixed with a standard model singlet. We impose a thermal history. If the new particles are fermions, this model is already constrained due to null results from XENON100. We comment on remaining regions of parameter space and assess prospects for future discovery. We do the same for the model where the new particles are scalars, which at present is less constrained. Much of the remaining parameter space for both models will be probed by the next generation of direct detection experiments. For the fermion model, DeepCore may also play an important role.
ISSN:1550-7998
1550-2368
DOI:10.1103/PhysRevD.85.075003