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Direct Detection Signals from Absorption of Fermionic Dark Matter Jeff A. Dror, Gilly Elor, & RM 1905.12635, 1908.10861 += Tien-Tien Yu (in prep.) Berkeley Week @ IPMU, 1/17/20 Thank You! I have absorbed a lot! Robert McGehee I have

  1. Direct Detection Signals from Absorption of Fermionic Dark Matter Jeff A. Dror, Gilly Elor, & RM 1905.12635, 1908.10861 += Tien-Tien Yu (in prep.) Berkeley Week @ IPMU, 1/17/20

  2. Thank You!

  3. I have absorbed a lot! Robert McGehee

  4. I have absorbed a lot! anomalies, asymmetric dark matter, Robert McGehee

  5. I have absorbed a lot! anomalies, asymmetric dark matter, axions/ALPs, baryogenesis, black holes, Robert McGehee

  6. I have absorbed a lot! anomalies, asymmetric dark matter, axions/ALPs, baryogenesis, black holes, bounces, cosmic strings, gravitational waves, Robert McGehee

  7. I have absorbed a lot! anomalies, asymmetric dark matter, axions/ALPs, baryogenesis, black holes, bounces, cosmic strings, gravitational waves, large Q expansions, leptogenesis, Robert McGehee

  8. I have absorbed a lot! anomalies, asymmetric dark matter, axions/ALPs, baryogenesis, black holes, bounces, cosmic strings, gravitational waves, large Q expansions, leptogenesis, neutron star BSM bounds, novel direct detection, Robert McGehee

  9. I have absorbed a lot! anomalies, asymmetric dark matter, axions/ALPs, baryogenesis, black holes, bounces, cosmic strings, gravitational waves, large Q expansions, leptogenesis, neutron star BSM bounds, novel direct detection, Q-balls, strong CP solutions, supernovae, superradiance, weak value Robert McGehee

  10. I have absorbed a lot! Robert McGehee

  11. I have absorbed a lot! Robert McGehee

  12. I have absorbed a lot! Robert McGehee

  13. I have absorbed a lot! Robert McGehee

  14. The WIMP Paradigm Fermion ~10 GeV-10 TeV Stable Robert McGehee

  15. The WIMP Paradigm Fermion ~10 GeV-10 TeV Stable χ χ N N Robert McGehee

  16. The WIMP Paradigm Fermion ~10 GeV-10 TeV Stable χ χ N N XENON Collaboration, E. Aprile et al. , “Dark Matter Search Results from a One Ton-Year Exposure of XENON1T”, Phys. Rev. Lett. 121 (2018), no. 11, 111302 Robert McGehee

  17. The WIMP Paradigm Fermion ~10 GeV-10 TeV Stable Eleanor Hall, Shin Kobayashi, David Dunsky, Zhengkang (Kevin) Zhang XENON Collaboration, E. Aprile et al. , “Dark Matter Search Results from a One Ton-Year Exposure of XENON1T”, Phys. Rev. Lett. 121 (2018), no. 11, 111302 Robert McGehee

  18. The WIMP Paradigm Fermion ~10 GeV-10 TeV Stable Jacob Leedom, Hiromasa Nakatsuka, Ippei Obata XENON Collaboration, E. Aprile et al. , “Dark Matter Search Results from a One Ton-Year Exposure of XENON1T”, Phys. Rev. Lett. 121 (2018), no. 11, 111302 Robert McGehee

  19. The WIMP Paradigm Fermion ~10 GeV-10 TeV Stable Robert McGehee, right now! XENON Collaboration, E. Aprile et al. , “Dark Matter Search Results from a One Ton-Year Exposure of XENON1T”, Phys. Rev. Lett. 121 (2018), no. 11, 111302 Robert McGehee

  20. Leave No Stone Unturned Requiem for a WIMP Robert McGehee

  21. Leave No Stone Unturned Requiem for a WIMP 1. Theory: everyone’s alternatives ( future ) 2. Experiment: larger or lighter ( future ) Robert McGehee

  22. Leave No Stone Unturned Requiem for a WIMP 1. Theory: everyone’s alternatives ( future ) 2. Experiment: larger or lighter ( future ) 3. Both: new DM & signals ( present ) i. DM scattering off electrons (Essig, Mardon, Volansky [1108.5383]) ii. Boosted DM (Agashe, Cui, Necib, Thaler [1405.7370]) iii. Self-Destructing DM (Grossman, Harnik, Telem, Zhang [1712.00455]) iv. Fermionic Absorption DM Robert McGehee

  23. Fermionic “Absorption” 𝑓 ± χ N’ N Robert McGehee

  24. Fermionic “Absorption” 𝑓 ± χ χ ν N, 𝑓 − N, 𝑓 − N’ N Robert McGehee

  25. Fermionic “Absorption” 𝑓 ± χ χ ν N, 𝑓 − N, 𝑓 − N’ N Robert McGehee

  26. Outline Motivation Charged Current Neutral Current Robert McGehee

  27. Fermionic Absorption by Nuclear Targets Jeff A. Dror, Gilly Elor, & RM 1905.12635, 1908.10861 Robert McGehee

  28. Charged Current Robert McGehee

  29. 𝑓 ± χ N’ N Robert McGehee

  30. Target Isotope Dependence Stable → “Induced” Beta Decay Threshold ~ MeV Large Experiments Robert McGehee

  31. “Direct” Constraints “Direct” → don’t rely on Χ being DM LHC constrains mediator (Belyaev et al [1807.03817]) Operator + Model dependent Robert McGehee

  32. Decay Constraints Robert McGehee

  33. Decay Constraints Robert McGehee

  34. Essig, Kuflik, McDermott, Volansky, Zurek [1309.4091] Decay Constraints Robert McGehee

  35. Decay Constraints Gong, Chen [0802.2296] Robert McGehee

  36. Induced β − Decays 𝑓 − χ N’ N • 𝑓 − ! • NR! • γ ! • N’ Decay! Robert McGehee

  37. Robert McGehee

  38. Robert McGehee

  39. Robert McGehee

  40. Robert McGehee

  41. Robert McGehee

  42. Induced β + Decays 𝑓 + 𝜓 ഥ N’ N • May be only signal (ADM) • Focus on Hydrogen Robert McGehee

  43. Robert McGehee

  44. Robert McGehee

  45. Neutral Current Robert McGehee

  46. χ ν N N Robert McGehee

  47. Robert McGehee

  48. Robert McGehee

  49. Robert McGehee

  50. LiH proposal by Budnik et al [1705.03016] Robert McGehee

  51. Summary Relaxing DM stability assumptions allows for novel signals and operators. Charged current operators induce β ± decays with NR, 𝑓 ± , and γ signals. Neutral current operators yield peaked, correlated nuclear recoil (NR) signals. New searches at existing experiments can probe both neutral and charged current operators. Stay tuned for absorption by electrons! Robert McGehee

  52. Backup Slides

  53. Fermionic Absorption by Electron Targets Jeff A. Dror, Gilly Elor, RM, & Tien-Tien Yu (in preparation) Robert McGehee

  54. χ ν 𝑓 − 𝑓 − Robert McGehee

  55. Preliminary Robert McGehee

  56. Preliminary Robert McGehee

  57. Decay details Robert McGehee

  58. Decay details: Charged current model Robert McGehee

  59. Decay details: Neutral current model Robert McGehee

  60. Robert McGehee

  61. Robert McGehee

  62. Robert McGehee

  63. Robert McGehee

  64. Robert McGehee

  65. Target Isotope Dependence Stable → “Induced” Beta Decay Threshold ~ MeV Large Experiments Robert McGehee

  66. Target Isotope Dependence Un stable → Beta Endpoint Shifts Threshold ~ MeV Large Experiments Robert McGehee

  67. Target Isotope Dependence Un stable → Beta Endpoint Shifts Threshold ~ MeV Large Experiments Sufficient exposure hard Best bet: tritium beta decay Robert McGehee

  68. Savchenko, Rudakovskyi [1903.01862] Robert McGehee

  69. PTOLEMY benchmark [1902.05508] Robert McGehee

  70. Robert McGehee

  71. Robert McGehee

  72. Robert McGehee

  73. Robert McGehee

  74. O, Ca, & W Robert McGehee

  75. Robert McGehee

  76. Robert McGehee

  77. Robert McGehee

  78. Robert McGehee

  79. Robert McGehee

  80. Robert McGehee

  81. Robert McGehee

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