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16.00 o10 h silverwood

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Research 7: H Silverwood

Research 7: H Silverwood

Published in: Technology, Education
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  • 1. Supersymmetric DarkMatter in IceCube Hamish Silverwood Department of Physics and Astronomy University of CanterburyImage Source: NASA/ESA MSc Supervisors: Jenni Adams and Anthony Brown
  • 2. Rotational Velocity Radial DistanceImage Source: Wikimedia and NASA/ESA Dark Matter
  • 3. Candidates must be1. Stable2. Electrically Neutral3. UncolouredImage Source: Wikimedia and NASA/ESA Dark Matter
  • 4. SupersymmetryParticles SparticlesLight HeavyR-Parity R-ParityPR = 1 PR = -1 R-Parity Conservation is necessary for Proton Stability.
  • 5. LightestSupersymmetricParticle
  • 6. LSP
  • 7. L LSP ParticlesSP PR = -1 PR = 1x1 =1
  • 8. L LSP ParticlesSP PR = -1 PR = 1x1 =1
  • 9. L Neutralino 1. Stable ~0 χS 2. Electrically Neutral 3. Uncoloured 4. Interacts via Weak Force &P Gravity
  • 10. Neutralinos are DarkMatter CandidatesImage Source: NASA/ESA Dark Matter
  • 11. Neutralino Accumulation
  • 12. LSP ParticlesPR =(-1)x(-1) PR = 1x1 =1 =1
  • 13. LSP Particles ν ▪ ▪ ▪ NeutrinosPR =(-1)x(-1) PR = 1x1 =1 =1
  • 14. ICECUBENEUTRINOOBSERVATORY
  • 15. Detector Optical Module
  • 16. MinimallySupersymmetricStandardModel
  • 17. M MSSM: 120 Free ParametersSS MSSM-25: 25 Free ParametersM
  • 18. Scanning the MSSM-25Parameter Space ●LSP Type ●LSP Mass ●Relic Density ●Capture Rate ●Annihilation Rate DarkSUSY ▪ ▪ Modifed by HS ▪ to run with 25 Parameters ● IceCube events, rates, and likelihoods
  • 19. Scanning the MSSM-25Parameter Space ●LSP Type ●LSP Mass ● Relic Density ●Capture Rate ●Annihilation Rate DarkSUSY ▪ ▪ Modifed by HS ▪ to run with 25 Parameters ● IceCube events, rates, and likelihoods Fitness Criteria is Relic Density;optimizing towards WMAP measurement.
  • 20. Scanning the MSSM-25Parameter Space
  • 21. Scanning the MSSM-25Parameter Space
  • 22. Scanning the MSSM-25Parameter Space
  • 23. Scanning the MSSM-25Parameter Space
  • 24. Final Goal of Parameter Scans IceCube Event Simulations
  • 25. Final Goal of Parameter Scans IceCube Event Simulations
  • 26. The Gritty Details●Monte Carlo methods used toscan parameter space.●Currently running scans basedon the VEGAS algorithm.
  • 27. Conclusion●SUSY supplies us with a Dark Mattercandidate particle: the neutralino.●IceCube can potentially detect theannihilation of these neutralinos in theSun.●Scans of the MSSM-25 parameterspace will help us interpret results fromIceCube.
  • 28. Questions

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