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Setting Limits on Supersymmetry Using Simplified Models

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

Dark light-Higgs bosons.

Patrick Draper¹, Tao Liu, Carlos E M Wagner

¹Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA.

Physical Review Letters

|April 27, 2011

Summary

This summary is machine-generated.

This study explores a supersymmetric model with unique Higgs and dark matter (DM) characteristics. It proposes a viable dark matter candidate with properties aligning with direct detection experiments.

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Area of Science:

Particle Physics
Cosmology
Supersymmetry

Background:

The Standard Model has limitations in explaining dark matter.
Supersymmetric extensions offer potential solutions, including dark matter candidates.

Purpose of the Study:

Investigate a specific limit of the Peccei-Quinn-symmetric Next-to-Minimal Supersymmetric Standard Model (PQ-NMSSM).
Explore novel Higgs and dark matter (DM) properties within this model.
Identify potential dark matter candidates and their phenomenological implications.

Main Methods:

Analysis of a nearly Peccei-Quinn-symmetric Next-to-Minimal Supersymmetric Standard Model.
Study of light singletlike particles (scalar, pseudoscalar, singlino-like DM).
Examination of Higgs boson decays and dark matter annihilation/scattering processes.

Main Results:

Naturally coexisting light scalar, pseudoscalar, and singlino-like DM candidate (0.1-10 GeV).
Suppressed Higgs decays to light scalars/pseudoscalars, evading collider constraints.
Parameter window enabling correct relic density and large direct-detection cross section for the singlino DM.
Consistency with DM direct-detection experiments (CoGeNT, DAMA/LIBRA).
Compatibility with experimental constraints from LEP, Tevatron, Υ, and flavor physics.

Conclusions:

The studied PQ-NMSSM limit provides a compelling framework for dark matter.
The singlino-like particle is a viable dark matter candidate consistent with various experimental data.
This model offers testable predictions for future dark matter searches and collider experiments.