Plans for H2a4b Signal Analysis 2025
Discover the latest updates in the H2a4b signal analysis by Zelin Yan, including successful runs, trigger efficiency comparisons, and plans for future ntuples preparation on the ATLAS grid. Explore the detailed analysis overview and cutflow results for both signal and background samples to optimize the analysis process.
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Presentation Transcript
H2a4b updates --Zelin Yan 2025/7/2 1
Analysis overview Process:H 2a 4b Use easyjet_monobc to prepare H2a4b signal ntuples 2025/7/2 2
Cutflow(H2a4b-SR) Successful run H2a4b-SR config on lxplus(trigger list at the end) Sample used:(event = 30000) mc23_13p6TeV.603998.PhPy8EG_A14_Haa_2b2b_sym_m_60_Zhemt.deriv.DAOD_PHYS.e 8557_a910_r15540_p6266(from Rui) Singlep Singlep. Singlep Singlep. . + + dilep dilep. . 2025/7/2 3
Cutflow(bkg:ttbar) Sample used:(event = 5000) mc23_13p6TeV.601230.PhPy8EG_A14_ttbar_hdamp258p75_dil.deriv.DAOD_PHYS.e8514_ s4162_r15540_p6266 Singlep Singlep. . Singlep Singlep. + dilep dilep. . . + 2025/7/2 4
Trigger efficiency compared(SR and bkg) Only single lepton triggers Only single lepton triggers Single lepton triggers + Single lepton triggers + dilep dilep. . H2a4b-SR(30k events) 0.8790 0.8806 Bkg:ttbar (5k events) 0.8568 0.8583 E(sing.+di.) > E(sing.) but only slight difference(~0.001) 2025/7/2 5
Summary & Plans Add Run3 singlep. and dilep. Triggers and run successfully on lxplus(both H2a4b and ttbar samples) Get SR and bkg cutflow Trigger efficiency: slight difference between singlep. trigger and dilep. trigger + singlep. trigger Plans List cut of each object in each region Prepare H2a4b SR ntuples and bkg ntuples on ATLAS grid 2025/7/2 6
Trigger list(from Rui) Single electron Single electron HLT_e26_lhtight_ivarloose_L1 eEM26M Dielectron Dielectron HLT_e24_lhvloose_2e12_lhvlo ose_L1eEM24L_3eEM12L Single muon Single muon dimuon dimuon HLT_mu24_ivarmedium_L1 MU14FCH HLT_mu22_mu8noL1_L1MU 14FCH HLT_e60_lhmedium_L1eEM2 6M HLT_e140_lhloose_L1eEM26 M HLT_2e17_lhvloose_L12eEM1 8M HLT_2e24_lhvloose_L12eEM2 4L HLT_mu50_L1MU14FCH HLT_2mu14_L12MU8F HLT_mu60_0eta105_msonly _L1MU14FCH HLT_e300_etcut_L1eEM26M HLT_e26_lhtight_ivarloose_L1 EM22VHI HLT_e24_lhvloose_2e12_lhvlo ose_L1EM20VH_3EM10VH For moun,2022 triggers are the same as 2023 triggers HLT_e60_lhmedium_L1EM22 VHI HLT_e140_lhloose_L1EM22V HI HLT_e300_etcut_L1EM22VHI HLT_2e17_lhvloose_L12EM15 VHI HLT_2e24_lhvloose_L12EM20 VH HLT_e140_lhloose_noringer_L 1EM22VHI 2025/7/2 7
