1 / 40

Search for doubly charged Higgs bosons in e- μ channel at √s=7TeV at CMS

Search for doubly charged Higgs bosons in e- μ channel at √s=7TeV at CMS. Oct. 17, 2012 Jongseok Lee (Sungkyunkwan University). Contents. Introduction Samples HLT and Skim Lepton and event selection Signal & background efficiency Limit Conclusion. Introduction.

edolie
Download Presentation

Search for doubly charged Higgs bosons in e- μ channel at √s=7TeV at CMS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Search for doubly charged Higgs bosons ine-μ channelat √s=7TeV at CMS Oct. 17, 2012 Jongseok Lee (Sungkyunkwan University)

  2. Contents • Introduction • Samples • HLT and Skim • Lepton and event selection • Signal & background efficiency • Limit • Conclusion

  3. Introduction • In models with expanded Higgs sector, one can have Higgs triplets.  Doubly charged Higgs • Pair production : through Drell-Yan process • Decays : • In this analysis, we only consider e-μ decays (Br(H++ l+l+)=1 is assumed, l+l+ = e+e+ or e+μ+ or μ+μ+) in CMS_NOTE2006_081 cross section (hep-ph/9610237)

  4. Samples • Used CMSSW version : 4_4_2 • MC signal samples (√s=7TeV) : full simulation data → H++H-- to l+l+l-l- → M(H±±) = 150, 170, 200, 250, 300, 400, 500GeV • MC background samples : full simulation data → ZZJetsTo4L, WZJetsTo3LNu TTTo2L2Nu2B, DYJetsToLL • Data samples : 2011 data, Lint = 4.983 fb-1 calculated by Michael Spira

  5. HLT efficiencies(Nhlt/Ngen) • Used paths : HLT_DoubleMu7 HLT_Ele17_CaloIdL_CaloIsoVL_Ele8_CaloIdL_CaloIsoVL HLT_Mu8_Ele17_CaloIdL HLT_Mu17_Ele8_CaloIdL

  6. Skim efficiencies(Nskim/Nhlt) • Skim conditions : firstpt>15 GeV && secondpt>10 GeV for leptons

  7. Lepton & event selection • Electron selection pT>10 GeV, |η|<2.5, |d0|<0.02, eidLoose • Muon selection pT>10 GeV, |η|<2.4, global muon, good muon, hits_val>20, nstation>=1 • Preselection : nlep+>=2, nlep->=2, relIso<0.5, Mll>10 GeV - relative isolation : (IsoPttrack + IsoPtecal + IsoPthcal)/pt < 0.5 • Event selection - mass dependent cut - quad-lepton mass : M4l > cut value

  8. Electron cut variables ne>=2, pt>10, |η|<2.5, |d0|<0.02, eidLoose, relIso<0.2

  9. Muon cut variables nm>=2, pt>10, |η|<2.5, good muon, hits_val>20, nsation>=1, relIso<0.2

  10. Mll ne>=2, pt>20, |η|<2.5, |d0|<0.02, eidLoose, relIso<0.2 nm>=2, pt>20, |η|<2.5, mu_good, mu_hits_val>20, mu_nstation>0, relIso<0.2 Mee Mμμ Mμμ Mee

  11. M4l for event selection (150GeV) preselction - nlep+>=2, nlep->=2, relIso<0.5, Mll>10 expected # of event expected # of event expected # of event H++H–to eeee H++H-- to eeeμ H++H--to eeμμ GeV GeV GeV expected # of event expected # of event expected # of event H++H-- to eμeμ H++H--μμμμ H++H--to eμμμ GeV GeV GeV

  12. M4l for event selection (250GeV) preselction - nlep+>=2, nlep->=2, relIso<0.5, Mll>10 expected # of event expected # of event expected # of event H++H–to eeee H++H-- to eeeμ H++H--to eeμμ GeV GeV GeV expected # of event expected # of event expected # of event H++H-- to eμeμ H++H--μμμμ H++H--to eμμμ GeV GeV GeV

  13. M4l for event selection (400GeV) preselction - nlep+>=2, nlep->=2, relIso<0.5, Mll>10 expected # of event expected # of event expected # of event H++H–to eeee H++H-- to eeeμ H++H--to eeμμ GeV GeV GeV expected # of event expected # of event expected # of event H++H-- to eμeμ H++H--μμμμ H++H--to eμμμ GeV GeV GeV

  14. ScL VS cut value of M4l preselction - nlep+>=2, nlep->=2, relIso<0.5, Mll>10 H++H–to eeee (150GeV) H++H-- to μμμμ (250GeV) GeV GeV H++H-- to eμeμ (400GeV) GeV

  15. Mass of H++ (150GeV) preselction - nlep+>=2, nlep->=2, relIso<0.5, Mll>10 expected # of event expected # of event expected # of event H++H–to eeee H++H--to eeμμ H++H-- to eeeμ GeV GeV GeV H++H-- to eμeμ H++H--μμμμ expected # of event expected # of event expected # of event H++H--to eμμμ GeV GeV GeV

  16. Mass of H++ (250GeV) preselction - nlep+>=2, nlep->=2, relIso<0.5, Mll>10 expected # of event expected # of event expected # of event H++H–to eeee H++H-- to eeeμ H++H--to eeμμ GeV GeV GeV expected # of event expected # of event expected # of event H++H-- to eμeμ H++H--to eμμμ H++H--μμμμ GeV GeV GeV

  17. Mass of H++ (400GeV) preselction - nlep+>=2, nlep->=2, relIso<0.5, Mll>10 expected # of event expected # of event expected # of event H++H–to eeee H++H-- to eeeμ H++H--to eeμμ GeV GeV GeV expected # of event expected # of event expected # of event H++H-- to eμeμ H++H--μμμμ H++H--to eμμμ GeV GeV GeV

  18. Mass of H++ (150GeV) preselection, M4l expected # of event expected # of event expected # of event H++H–to eeee H++H--to eeμμ H++H-- to eeeμ GeV GeV GeV H++H-- to eμeμ expected # of event expected # of event expected # of event H++H--to eμμμ H++H--μμμμ GeV GeV GeV

  19. Mass of H++ (250GeV) preselection, M4l expected # of event expected # of event expected # of event H++H–to eeee H++H-- to eeeμ H++H--to eeμμ GeV GeV GeV expected # of event expected # of event expected # of event H++H-- to eμeμ H++H--to eμμμ H++H--μμμμ GeV GeV GeV

  20. Mass of H++ (400GeV) preselection, M4l expected # of event expected # of event expected # of event H++H–to eeee H++H-- to eeeμ H++H--to eeμμ GeV GeV GeV expected # of event expected # of event expected # of event H++H-- to eμeμ H++H--μμμμ H++H--to eμμμ GeV GeV GeV

  21. Signal & background efficiencies

  22. Signal & background efficiencies

  23. Signal & background efficiencies

  24. Signal & background efficiencies

  25. Signal & background efficiencies

  26. Signal & background efficiencies

  27. # of expected events

  28. # of expected events

  29. # of expected events

  30. # of expected events

  31. # of expected events

  32. # of expected events

  33. Exclusion limit for 4l_pair(Lint = 4.983fb-1) preselection, M4l eeee Expected Limit : 355 GeV Observed Limit : 357 GeV eeem Expected Limit : 377 GeV Observed Limit : 377 GeV eemm Expected Limit : 394 GeV Observed Limit : 394 GeV emmm Expected Limit : 404 GeV Observed Limit : 404 GeV mmmm Expected Limit : 405 GeV Observed Limit : 408 GeV emem Expected Limit : 374 GeV Observed Limit : 380 GeV

  34. Conclusion • No signal excess is observed. • 95% Confidence Level lower limits are set on the H++ mass of 357GeV in the eeee channel, of 380GeV in the eμeμ, of 408GeV in the μμμμ.

  35. backup • Systematic uncertainties • Used samples • Isolation

  36. Systematic uncertainties • Trigger and primary vertex finding : 1.5% • Signal cross section : 10~15% • Luminosity (for signal only) : 4.5%

  37. Used samples (MC) /HPlusPlusHMinusMinusHTo4L_M-150_7TeV-pythia6/jslee-v3-Fall11_m150-19f5b766f4bae6d22a03859f25fbe4f1/USER /HPlusPlusHMinusMinusHTo4L_M-170_7TeV-pythia6/jslee-v3-Fall11_m170-19f5b766f4bae6d22a03859f25fbe4f1/USER /HPlusPlusHMinusMinusHTo4L_M-200_7TeV-pythia6/jslee-v3-Fall11_m200-19f5b766f4bae6d22a03859f25fbe4f1/USER /HPlusPlusHMinusMinusHTo4L_M-250_7TeV-pythia6/jslee-v3-Fall11_m250-19f5b766f4bae6d22a03859f25fbe4f1/USER /HPlusPlusHMinusMinusHTo4L_M-300_7TeV-pythia6/jslee-v3-Fall11_m300-19f5b766f4bae6d22a03859f25fbe4f1/USER /HPlusPlusHMinusMinusHTo4L_M-350_7TeV-pythia6/jslee-v3-Fall11_m350-19f5b766f4bae6d22a03859f25fbe4f1/USER /HPlusPlusHMinusMinusHTo4L_M-400_7TeV-pythia6/jslee-v3-Fall11_m400-19f5b766f4bae6d22a03859f25fbe4f1/USER /HPlusPlusHMinusMinusHTo4L_M-500_7TeV-pythia6/jslee-v3-Fall11_m500-19f5b766f4bae6d22a03859f25fbe4f1/USER /HPlusPlusHMinusHTo3L_M-150_7TeV-calchep-pythia6/seungen-v8-Fall11_m150_3L-19f5b766f4bae6d22a03859f25fbe4f1/USER /HPlusPlusHMinusHTo3L_M-170_7TeV-calchep-pythia6/seungen-v8-Fall11_m170_3L-19f5b766f4bae6d22a03859f25fbe4f1/USER /HPlusPlusHMinusHTo3L_M-200_7TeV-calchep-pythia6/seungen-v8-Fall11_m200_3L-19f5b766f4bae6d22a03859f25fbe4f1/USER /HPlusPlusHMinusHTo3L_M-250_7TeV-calchep-pythia6/seungen-v8-Fall11_m250_3L-19f5b766f4bae6d22a03859f25fbe4f1/USER /HPlusPlusHMinusHTo3L_M-300_7TeV-calchep-pythia6/seungen-v8-Fall11_m300_3L-19f5b766f4bae6d22a03859f25fbe4f1/USER /HPlusPlusHMinusHTo3L_M-350_7TeV-calchep-pythia6/seungen-v8-Fall11_m350_3L-19f5b766f4bae6d22a03859f25fbe4f1/USER /HPlusPlusHMinusHTo3L_M-400_7TeV-calchep-pythia6/seungen-v8-Fall11_m400_3L-19f5b766f4bae6d22a03859f25fbe4f1/USER /HPlusPlusHMinusHTo3L_M-500_7TeV-calchep-pythia6/seungen-v8-Fall11_m500_3L-19f5b766f4bae6d22a03859f25fbe4f1/USER /TTTo2L2Nu2B_7TeV-powheg-pythia6/jslee-v3-Fall11_TTTo2L2Nu2B-19f5b766f4bae6d22a03859f25fbe4f1/USER /DYJetsToLL_M-10To50_TuneZ2_7TeV-madgraph/jslee-v3-Fall11_DYJetsToLL_M-10To50-19f5b766f4bae6d22a03859f25fbe4f1/USER /DYJetsToLL_TuneZ2_M-50_7TeV-madgraph-tauola/jslee-v3-Fall11_DYJetsToLL_M-50-19f5b766f4bae6d22a03859f25fbe4f1/USER /ZZJetsTo4L_TuneZ2_7TeV-madgraph-tauola/jslee-v3-Fall11_ZZJetsTo4L-19f5b766f4bae6d22a03859f25fbe4f1/USER /WZJetsTo3LNu_TuneZ2_7TeV-madgraph-tauola/jslee-v3-Fall11_WZJetsTo3LNu-19f5b766f4bae6d22a03859f25fbe4f1/USER /WWJetsTo2L2Nu_TuneZ2_7TeV-madgraph-tauola/jslee-v3-Fall11_WWJetsTo2L2Nu-19f5b766f4bae6d22a03859f25fbe4f1/USER /T_TuneZ2_tW-channel-DR_7TeV-powheg-tauola/jslee-v3-Fall11_T_tW-channel-19f5b766f4bae6d22a03859f25fbe4f1/USER /T_TuneZ2_t-channel_7TeV-powheg-tauola/jslee-v3-Fall11_T_t-channel-19f5b766f4bae6d22a03859f25fbe4f1/USER /T_TuneZ2_s-channel_7TeV-powheg-tauola/jslee-v3-Fall11_T_s-channel-19f5b766f4bae6d22a03859f25fbe4f1/USER /Tbar_TuneZ2_tW-channel-DR_7TeV-powheg-tauola/jslee-v3-Fall11_Tbar_tW-channel-19f5b766f4bae6d22a03859f25fbe4f1/USER /Tbar_TuneZ2_t-channel_7TeV-powheg-tauola/jslee-v3-Fall11_Tbar_t-channel-19f5b766f4bae6d22a03859f25fbe4f1/USER /Tbar_TuneZ2_s-channel_7TeV-powheg-tauola/jslee-v3-Fall11_Tbar_s-channel-19f5b766f4bae6d22a03859f25fbe4f1/USER

  38. Used samples (data) /DoubleElectron/jslee-v3-Fall11_DoubleElectron_Run2011A_05Aug2011_v1-18b4aef7eb2b9c0c6ad92f935cdcdb4a/USER /DoubleElectron/jslee-v3-Fall11_DoubleElectron_Run2011A_May10ReReco_v1-6125610a3264e06b3ee5c66bc7719b98/USER /DoubleElectron/jslee-v3-Fall11_DoubleElectron_Run2011A_PromptReco_v4-8592c87ddd778f66ecf538ebdd20a0e4/USER /DoubleElectron/jslee-v3-Fall11_DoubleElectron_Run2011A_PromptReco_v6-0a1f711a355d99b1e908d4970bed9797/USER /DoubleElectron/jslee-v3-Fall11_DoubleElectron_Run2011B_PromptReco_v1-0a1f711a355d99b1e908d4970bed9797/USER /DoubleMu/jslee-v3-Fall11_DoubleMu_Run2011A_05Aug2011_v1-fe1e7fc291a9c826b8925e83aa7c775e/USER /DoubleMu/jslee-v3-Fall11_DoubleMu_Run2011A_May10ReReco_v1-86117ca6e7c92434b30c5816c0580eab/USER /DoubleMu/jslee-v3-Fall11_DoubleMu_Run2011A_PromptReco_v4-fe1e7fc291a9c826b8925e83aa7c775e/USER /DoubleMu/jslee-v3-Fall11_DoubleMu_Run2011A_PromptReco_v6-1d73d4a3c31e88365d81b0724325807d/USER /DoubleMu/jslee-v3-Fall11_DoubleMu_Run2011B_PromptReco_v1-1d73d4a3c31e88365d81b0724325807d/USER /MuEG/seungen-v5-Fall11_MuEG_Run2011A_PromptReco_v4-ab165cb697ee9e376f353fb258fbebb5/USER /MuEG/seungen-v5-Fall11_MuEG_Run2011A_May10ReReco_v1-29ee753e551b7bc2d4baf08f70643993/USER /MuEG/seungen-v5-Fall11_MuEG_Run2011A_05Aug2011_v1-26be1f713248cc03292ca074478201ea/USER /MuEG/seungen-v5-Fall11_MuEG_Run2011A_PromptReco_v6-21329aa84db5fdb5806615c5d8918b06/USER /MuEG/seungen-v5-Fall11_MuEG_Run2011B_PromptReco_v1-21329aa84db5fdb5806615c5d8918b06/USER

  39. Isolation • isolation in tracker only : • isolation in tracker+calorimeter : • relative isolation in tracker only : • relative isolation in tracker+calorimeter :

  40. Delta-beta correction for lepton isolation Corrected lepton isolation : ne>=2, pt>10, |η|<2.5, |d0|<0.02, el_eidLoose nm>=2, pt>10, |η|<2.5, good muon, hits_val>20, nsation>=1

More Related