Eric CONTE FCNC search in single top involving hard photon Phenomenological 13 TeV.

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Presentation transcript:

Eric CONTE FCNC search in single top involving hard photon Phenomenological 13 TeV

Single top & hard photon FCNC search in single top involving hard photonE. Conteslide 2 Feynman diagrams : γ γ γ Single top topology TTbar topology

First selection FCNC search in single top involving hard photonE. Conteslide 3 Cut-flow L int = 100pb -1 All background source are not showed ! But the dominant one are there!

Single top & hard photon FCNC search in single top involving hard photonE. Conteslide 4 MVA: toward a list of variables # jets Photon PT Lepton PT B PT Top PT W PT Charge asymmetry Top MT W MT DeltaR between b and photon DeltaR between lepton and photon DeltaPhi between b and photon DeltaPhi between lepton and photon DeltaPhi between MET and photon DeltaPhi between W and photon First attempt (Kappa_act) Remove less useful and strongly correlated variables: W PT & MET

Single top & hard photon FCNC search in single top involving hard photonE. Conteslide 5 MVA : Kappa_aut --- BDT : BDT : Rank : Variable : Variable Importance --- BDT : BDT : 1 : pt_a : 1.183e BDT : 2 : n_jet : 1.156e BDT : 3 : mt : 8.950e BDT : 4 : dr_b_a : 8.134e BDT : 5 : mw : 7.516e BDT : 6 : dphi_w_a : 7.461e BDT : 7 : pt_t : 7.396e BDT : 8 : dr_l_a : 6.357e BDT : 9 : dphi_b_a : 5.685e BDT : 10 : asym : 5.558e BDT : 11 : dphi_met_a : 5.379e BDT : 12 : pt_b : 4.937e BDT : 13 : dphi_l_a : 4.707e BDT : 14 : pt_l : 4.534e BDT : Reliable variable?

Single top & hard photon FCNC search in single top involving hard photonE. Conteslide 6 MVA : Kappa_aut

Single top & hard photon FCNC search in single top involving hard photonE. Conteslide 7 MVA : Kappa_aut

Single top & hard photon FCNC search in single top involving hard photonE. Conteslide 8 MVA : Kappa_aut

Single top & hard photon FCNC search in single top involving hard photonE. Conteslide 9 MVA : Kappa_aut

Single top & hard photon FCNC search in single top involving hard photonE. Conteslide 10 MVA : Kappa_act --- Factory : Ranking input variables (method specific) BDT : Ranking result (top variable is best ranked) --- BDT : BDT : Rank : Variable : Variable Importance --- BDT : BDT : 1 : n_jet : 1.342e BDT : 2 : pt_a : 1.157e BDT : 3 : pt_t : 8.961e BDT : 4 : dr_b_a : 8.264e BDT : 5 : mw : 7.964e BDT : 6 : dr_l_a : 6.603e BDT : 7 : dphi_w_a : 6.290e BDT : 8 : mt : 6.288e BDT : 9 : dphi_met_a : 6.063e BDT : 10 : dphi_b_a : 6.016e BDT : 11 : pt_l : 5.790e BDT : 12 : pt_b : 4.826e BDT : 13 : asym : 4.385e BDT : 14 : dphi_l_a : 3.554e BDT :

Single top & hard photon FCNC search in single top involving hard photonE. Conteslide 11 MVA : Kappa_act

Single top & hard photon FCNC search in single top involving hard photonE. Conteslide 12 MVA : Kappa_act

Single top & hard photon FCNC search in single top involving hard photonE. Conteslide 13 MVA : Kappa_act

Single top & hard photon FCNC search in single top involving hard photonE. Conteslide 14 MVA : Kappa_act Overtraining?

To-do list FCNC search in single top involving hard photonE. Conteslide 15 What remains to do since the last meeting: Fix the problem of normalization: OK Some photon background sources are underestimated: not yet Cross-check and understanding of photon isolation: not yet Implementing TMVA: OK Exclusion limit plot for Cut-and-count analysis: not yet MVA analysis: not yet