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Constraining Dark Matter with cosmic ray data

Constraining Dark Matter with cosmic ray data. IAP Timur DELAHAYE. Collaborators. Annecy Pierre Salati Richard Taillet Turin Nicolao Fornengo Fiorenza Donato Julien Lavalle Roberto Lineros. Paris Pierre Brun David Maurin. Cosmic rays. What is Dark Matter indirect detection?.

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Constraining Dark Matter with cosmic ray data

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  1. Constraining Dark Matter with cosmic ray data IAPTimur DELAHAYE

  2. Collaborators • Annecy • Pierre Salati • Richard Taillet • Turin • Nicolao Fornengo • Fiorenza Donato • Julien Lavalle • Roberto Lineros • Paris • Pierre Brun • David Maurin

  3. Cosmic rays

  4. What is Dark Matter indirect detection?

  5. What is the background ?

  6. Charged Particles • Creation • Propagation

  7. The propagation model

  8. The propagation model

  9. Diffusion equation

  10. Energy losses

  11. Main losses

  12. Inverse Compton Stong, Moskalenko & Reimer APJ, 537,2, pp. 763-784

  13. Positrons: Origin arXiv:0809.5268

  14. Positrons: the uncertainties • Cross sections • Badhwar et alii 1977, Phys. Rev. D,15, 820 • Tan & Ng 1983, Journal of Physics G Nuclear Physics,9, 1289 • Kamae et alii2006, ApJ, 647, 692 • Proton flux • Shikaze et alii2007, Astroparticle Physics, 28,154 • Donato et alii 2001, ApJ, 563, 172 • Propagation parameters • Boron/Carbon analysis: Maurin et alii2001, ApJ, 555,585

  15. Positrons: source arXiv:0809.5268

  16. Proton influence

  17. Cross-section influence

  18. Diffusion parameters

  19. Diffusion equation

  20. Positrons: the background arXiv:0809.5268

  21. Positrons: the background arXiv:0809.5268

  22. PAMELA

  23. Positron fraction arXiv:0809.5268

  24. Electrons

  25. Electrons

  26. Positron fraction

  27. Influence of the halo profile PRD77 (2008) 063527

  28. Influence of the channel PRD77 (2008) 063527

  29. Total flux GALPROP APJ 493 (1998) 694 PRD77 (2008) 063527

  30. Dark Matter ? GALPROP APJ 493 (1998) 694 PRD77 (2008) 063527

  31. Boost Factor(s) • Particle Physics: • Sommerfeld Effect • Resonances • Exciting Dark Matter • …

  32. Boost Factor(s) • Astrophysics: Clumps • Limited value: Lavalle et alii A&A 479, 427-452 (2008) • Different for positrons and anti-protons

  33. Astrophysical boost factor Lavalle et alii A&A 479, 427-452 (2008)

  34. Positrons: Dark Matter ? arXiv:0810.5292

  35. Anti-protons arXiv:0810.5292

  36. Anti-protons: constraints arXiv:0810.5292

  37. Leptonic Dark Matter ? M. Cirelli, M. Kadastik, M. Raidal & A. Strumia arXiv:0809.2409

  38. Astrophysical objects • Pulsar • Hall & Hooper arXiv:0811.3362 • Yüksel, Kistler & Stanev arXiv:0810.2784 • Super Nova remnants • Hu et alii arXiv:0901.1520

  39. What else do we need ? • Absolute fluxes • Positrons • Protons • Anti-protons • Other data • Boron/Carbon • Anisotropy

  40. ATIC

  41. Une ère ATIC ? Nature456, 362-365

  42. HESS With the courtesy of Florent Dubois

  43. HESS arXiv:0811.3894

  44. AMS ?

  45. What about Gamma rays ?

  46. First light

  47. Diffuse emission Very Preliminary !

  48. Conclusion • The method • Reduce uncertainties on the background • Model independant fits • Multi-channel analysis • Proper use of boost factors • The aim • Discovery in collider

  49. Next ? • Astrophysical boost factors • Gamma ray background • Comparision with LHC data (no hurry!)

  50. Questions ?

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