Direct Constraints on Minimal Supersymmetry from Fermi-LAT Observations of the Dwarf Galaxy Segue 1

Abstract

The dwarf galaxy Segue 1 is one of the most promising targets for the indirect detection of dark matter. Here we examine what constraints 9 months of Fermi-LAT gamma-ray observations of Segue 1 place upon the Constrained Minimal Supersymmetric Standard Model (CMSSM), with the lightest neutralino as the dark matter particle. We use nested sampling to explore the CMSSM parameter space, simultaneously fitting other relevant constraints from accelerator bounds, the relic density, electroweak precision observables, the anomalous magnetic moment of the muon and B-physics. We include spectral and spatial fits to the Fermi observations, a full treatment of the instrumental response and its related uncertainty, and detailed background models. We also perform an extrapolation to 5 years of observations, assuming no signal is observed from Segue 1 in that time. Results marginally disfavour models with low neutralino masses and high annihilation cross-sections. Virtually all of these models are however already disfavoured by existing experimental or relic density constraints.

22 pages, 5 figures; added extra scans with extreme halo parameters, expanded introduction and discussion in response to referee's comments

References in corpus (22)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Likelihoods and Parameters from the WMAP data
• Bayes in the sky: Bayesian inference and model selection in cosmology
• The Kinematics of the Ultra-Faint Milky Way Satellites: Solving the Missing Satellite Problem
• Measurement of the Cosmic Ray e+ plus e- spectrum from 20 GeV to 1 TeV with the Fermi Large Area Telescope
• Cats and Dogs, Hair and A Hero: A Quintet of New Milky Way Companions
• The redshift dependence of the structure of massive LCDM halos
• New Gamma-Ray Contributions to Supersymmetric Dark Matter Annihilation
• Pre-launch estimates for GLAST sensitivity to Dark Matter annihilation signals
• The Most Dark Matter Dominated Galaxies: Predicted Gamma-ray Signals from the Faintest Milky Way Dwarfs
• Indirect Dark Matter Detection from Dwarf Satellites: Joint Expectations from Astrophysics and Supersymmetry
• Likelihood Functions for Supersymmetric Observables in Frequentist Analyses of the CMSSM and NUHM1
• Bounds on Cross-sections and Lifetimes for Dark Matter Annihilation and Decay into Charged Leptons from Gamma-ray Observations of Dwarf Galaxies
• Gamma rays from ultracompact primordial dark matter minihalos
• Predictions for Supersymmetric Particle Masses in the CMSSM using Indirect Experimental and Cosmological Constraints
• Selecting a Model of Supersymmetry Breaking Mediation
• On prospects for dark matter indirect detection in the Constrained MSSM
• Could the Fermi-LAT detect gamma-rays from dark matter annihilation in the dwarf galaxies of the Local Group?
• Prospects for dark matter detection with IceCube in the context of the CMSSM
• A Bayesian Analysis of the Constrained NMSSM
• Discovery potential of the next-to-minimal supergravity-motivated model
• Dark matter dominated dwarf disc galaxy Segue 1
• Likelihood analysis of the next-to-minimal supergravity motivated model

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• Gamma Ray Signals from Dark Matter: Concepts, Status and Prospects
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• Global Constraints on Effective Dark Matter Interactions: Relic Density, Direct Detection, Indirect Detection, and Collider
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• Global Fits of the cMSSM and NUHM including the LHC Higgs discovery and new XENON100 constraints
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• Dark Matter CMB Constraints and Likelihoods for Poor Particle Physicists
• Antiproton constraints on dark matter annihilations from internal electroweak bremsstrahlung
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• A Coverage Study of the CMSSM Based on ATLAS Sensitivity Using Fast Neural Networks Techniques
• A generic method to constrain the dark matter model parameters from Fermi observations of dwarf spheroids
• Constraints on dark matter annihilations from diffuse gamma-ray emission in the Galaxy
• Sneutrino Dark Matter: Symmetry Protection and Cosmic Ray Anomalies
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• A comparison of optimisation algorithms for high-dimensional particle and astrophysics applications
• Probing neutralino dark matter in the MSSM & the NMSSM with directional detection
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• Gamma-Ray Dark Matter Searches in Milky Way Satellites -- A Comparative Review of Data Analysis Methods and Current Results
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• Implications for constrained supersymmetry of combined H.E.S.S. observations of dwarf galaxies, the Galactic halo and the Galactic Centre
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