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On the behaviour of composite resonances breaking LFU Mikael Chala - PowerPoint PPT Presentation

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On the behaviour of composite resonances breaking LFU Mikael Chala (IPPP) With M. Spannowsky. arXiv:1803.02364 MC4BSM, IPPP Durham, April 21, 2018 Several hints of violation of lepton fmavor universality, in particular: MC4BSM, IPPP Durham,

  1. On the behaviour of composite resonances breaking LFU Mikael Chala (IPPP) With M. Spannowsky. arXiv:1803.02364 MC4BSM, IPPP Durham, April 21, 2018

  2. Several hints of violation of lepton fmavor universality, in particular: MC4BSM, IPPP Durham, April 21, 2018

  3. Several hints of violation of lepton fmavor universality, - Very clean observable - Very clean observable in particular: - Below SM prediction - Below SM prediction in several measurements in several measurements MC4BSM, IPPP Durham, April 21, 2018

  4. Several hints of violation of lepton fmavor universality, - Very clean observable - Very clean observable in particular: - Below SM prediction - Below SM prediction in several measurements in several measurements MC4BSM, IPPP Durham, April 21, 2018

  5. Several hints of violation of lepton fmavor universality, - Very clean observable - Very clean observable in particular: - Below SM prediction - Below SM prediction in several measurements in several measurements few TeV size , so natural in other models of new physics (e.g. Composite Higgs models) MC4BSM, IPPP Durham, April 21, 2018

  6. The simplifjed Lagrangian MC4BSM, IPPP Durham, April 21, 2018

  7. The simplifjed Lagrangian Larger values in confmict with neutrino trident Smaller values disfavoured production. by [ L. Di Luzio, M. Kirk, and A. Lenz; '17] MC4BSM, IPPP Durham, April 21, 2018

  8. The simplifjed Lagrangian Larger values in confmict with neutrino trident Smaller values disfavoured production. by [ L. Di Luzio, M. Kirk, and A. Lenz; '17] MC4BSM, IPPP Durham, April 21, 2018

  9. The origin of these couplings in composite Higgs models MC4BSM, IPPP Durham, April 21, 2018

  10. The origin of these couplings in composite Higgs models 1510.07658 1503.03865 1608.02362 1611.03507 1703.06019 1712.07646 1712.02536 1508.00569 MC4BSM, IPPP Durham, April 21, 2018

  11. The composite Higgs paradigm (a high-energy copy of QCD) UV GeV scale IR MC4BSM, IPPP Durham, April 21, 2018

  12. The composite Higgs paradigm (a high-energy copy of QCD) UV quark condensate GeV scale IR MC4BSM, IPPP Durham, April 21, 2018

  13. The composite Higgs paradigm (a high-energy copy of QCD) UV quark condensate GeV scale IR MC4BSM, IPPP Durham, April 21, 2018

  14. The composite Higgs paradigm (a high-energy copy of QCD) UV quark condensate GeV scale IR MC4BSM, IPPP Durham, April 21, 2018

  15. The composite Higgs paradigm (a high-energy copy of QCD) UV TeV scale IR MC4BSM, IPPP Durham, April 21, 2018

  16. The composite Higgs paradigm (a high-energy copy of QCD) UV TeV scale IR MC4BSM, IPPP Durham, April 21, 2018

  17. The composite Higgs paradigm (a high-energy copy of QCD) UV parton condensate TeV scale IR MC4BSM, IPPP Durham, April 21, 2018

  18. The composite Higgs paradigm (a high-energy copy of QCD) UV parton condensate TeV scale IR MC4BSM, IPPP Durham, April 21, 2018

  19. The composite Higgs paradigm (a high-energy copy of QCD) UV parton condensate TeV scale IR MC4BSM, IPPP Durham, April 21, 2018

  20. The composite Higgs paradigm (a high-energy copy of QCD) UV parton condensate TeV scale IR MC4BSM, IPPP Durham, April 21, 2018

  21. The composite Higgs paradigm (a high-energy copy of QCD) UV True for all composite resonances! parton condensate TeV scale IR MC4BSM, IPPP Durham, April 21, 2018

  22. The origin of these couplings in composite Higgs models MC4BSM, IPPP Durham, April 21, 2018

  23. The origin of these couplings in composite Higgs models MC4BSM, IPPP Durham, April 21, 2018

  24. The origin of these couplings in composite Higgs models MC4BSM, IPPP Durham, April 21, 2018

  25. The origin of these couplings in composite Higgs models Breaks the shift symmetry Must be small, so M must be small too MC4BSM, IPPP Durham, April 21, 2018

  26. The origin of these couplings in composite Higgs models Breaks the shift symmetry Must be small, so M must be small too So, this channel is open! It dominates the decay width! MC4BSM, IPPP Durham, April 21, 2018

  27. Current bounds on vector-like fermions MC4BSM, IPPP Durham, April 21, 2018

  28. Current bounds on vector-like fermions Heavy quarks are produced in pairs via QCD (no model dependence) 28 MC4BSM, IPPP Durham, April 21, 2018

  29. Current bounds on vector-like fermions This is strongly infmuenced by the minimal composite Higgs model. In non-minimal composite Higgs models: 4d UV completions, DM, BAU, … and most models are non-minimal! 29 MC4BSM, IPPP Durham, April 21, 2018

  30. Current bounds on vector-like fermions This is strongly infmuenced by the minimal composite Higgs model. In non-minimal composite Higgs models: 4d UV completions, DM, BAU, … and most models are non-minimal! [ MC , 1705.03013 ] 30 MC4BSM, IPPP Durham, April 21, 2018

  31. Current bounds on vector-like fermions Heavy leptons are produced in pairs via EW interactions, so much weaker constraints [1306.1525], [1007.4206] 31 MC4BSM, IPPP Durham, April 21, 2018

  32. The origin of these couplings in composite Higgs models Breaks the shift symmetry Must be small, so M must be small too So, this channel is open! It dominates the decay width! MC4BSM, IPPP Durham, April 21, 2018

  33. The actual reach of di-muon searches MC4BSM, IPPP Durham, April 21, 2018

  34. The actual reach of Naive di-muon bound (neglecting di-muon searches heavy fermions) MC4BSM, IPPP Durham, April 21, 2018

  35. Actual di-muon The actual reach of Naive di-muon bound (neglecting bound di-muon searches heavy fermions) MC4BSM, IPPP Durham, April 21, 2018

  36. Actual di-muon The actual reach of Naive di-muon bound (neglecting bound di-muon searches heavy fermions) almost one order of magnitude MC4BSM, IPPP Durham, April 21, 2018

  37. Leptonic Z decay gives very few events, so we consider hadronic decays of: MC4BSM, IPPP Durham, April 21, 2018

  38. Event selection MC4BSM, IPPP Durham, April 21, 2018

  39. Event selection Muons with pT > 50 GeV removed from hadrons in clustering process MC4BSM, IPPP Durham, April 21, 2018

  40. Event selection Muons with pT > 50 GeV removed from hadrons in clustering process Jets are clustered with R = 1.2 MC4BSM, IPPP Durham, April 21, 2018

  41. Event selection Muons with pT > 50 GeV removed from hadrons in clustering process Jets are clustered with R = 1.2 We require, fjrst, the presence of exactly two opposite charged muons and at least one jet MC4BSM, IPPP Durham, April 21, 2018

  42. Event selection Muons with pT > 50 GeV removed from hadrons in clustering process Jets are clustered with R = 1.2 We require, fjrst, the presence of exactly two opposite charged muons and at least one jet The leading pT jet is required to have a signifjcant mass drop. It is then fjltered MC4BSM, IPPP Durham, April 21, 2018

  43. Event selection Muons with pT > 50 GeV removed from hadrons in clustering process Jets are clustered with R = 1.2 We require, fjrst, the presence of exactly two opposite charged muons and at least one jet The leading pT jet is required to have a signifjcant mass drop. It is then fjltered 0802.2470 MC4BSM, IPPP Durham, April 21, 2018

  44. Event selection Muons with pT > 50 GeV removed from hadrons in clustering process Jets are clustered with R = 1.2 We require, fjrst, the presence of exactly two opposite charged muons and at least one jet The leading pT jet is required to have a signifjcant mass drop. It is then fjltered MC4BSM, IPPP Durham, April 21, 2018

  45. Event selection Muons with pT > 50 GeV removed from hadrons in clustering process Jets are clustered with R = 1.2 We require, fjrst, the presence of exactly two opposite charged muons and at least one jet The leading pT jet is required to have a signifjcant mass drop. It is then fjltered MC4BSM, IPPP Durham, April 21, 2018

  46. MC4BSM, IPPP Durham, April 21, 2018

  47. Event selection pT muons above 200 GeV, leading jet mass in the range [80, 130] GeV MC4BSM, IPPP Durham, April 21, 2018

  48. Event selection pT muons above 200 GeV, leading jet mass in the range [80, 130] GeV MC4BSM, IPPP Durham, April 21, 2018

  49. MC4BSM, IPPP Durham, April 21, 2018

  50. Event selection We can then cut on mV and mL: MC4BSM, IPPP Durham, April 21, 2018

  51. Event selection We can then cut on mV and mL: MC4BSM, IPPP Durham, April 21, 2018

  52. Event selection We can then cut on mV and mL: MC4BSM, IPPP Durham, April 21, 2018

  53. Final results MC4BSM, IPPP Durham, April 21, 2018

  54. Final results MC4BSM, IPPP Durham, April 21, 2018

  55. Final results Assumes half of the cross section into the target fjnal state MC4BSM, IPPP Durham, April 21, 2018

  56. Conclusions Parameter space regions that were thought excluded by searches for di-muon resonances, are still allowed. They are not even ruled out by other beyond the Standard Model analyses, including multi-lepton searches for electroweakinos or heavy leptons. MC4BSM, IPPP Durham, April 21, 2018

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