1. VBF H- > ττ- > lept had Electron Channel Jaspreet Sidhu ATLAS Toronto meeting 24-08-05

2. Goals Produce updated Full Simulation of H-> ττ, τ-> e, τ-> h, with good TRT(Transition Radiation Track) simulation Improve Electron Identification Improve Reconstruction Efficiency

3. Data Set Generation + Simulation – Release 10.0.1 – Rome layout, with TRT simulation Digitization + Reconstruction – Release 10.0.1 – Default reconstruction parameters Electrons, tau’s…, jets – R=0.4 Cone algorithm for jets – AOD objects Pythia Production H-> ττ, VBF mode 10000 Events M H = 115GeV τ-> e, τ-> h (σ x BR) = 390 fb

4. Full simulation (Tau ID, Elec ID) Tau is essentially a narrow jet in the dectector Tau Id Cuts abs(charge)==1 NumTrack ==1,3 likelihood >4 Elec ID hasTrack() pT > 20GeV egamma object isEM ==0 (using all the flags)

5. Elec Id (compare TRT 10.0.1) Truth Container ( 3930 electrons, 3466 events) Begin with 33452 electron candidates Basic Cut: Pt <20GeV, HasTrack(), Egamma Object ( 5119 electrons) Cut# elec  (%) isEM (all flags) 305877.8% Isolation (EtCone<10GeV) 252964.3% isEM (no TRT) 281471.6% Isolation 240061.1% epiNN 383596.1% Isolation 297175.6%

6. Number of Electrons All Electrons Basic Cut isEM All flags isEM No TRT

7. epiNN Cut

8. Summary Production test went well (except for Condor crashes) Improving Elect ID with TRT and Isolation EoverP studies going on Tau identification still to be done Trigger to be included in the next reconstruction round