Overview of the high-level trigger electron and photon selection for the ATLAS experiment at the LHC
- Mello, A. Gesualdi
- Dos Anjos, A.
- Armstrong, S.
- Baines, J. T. M.
- Bee, C. P.
- Biglietti, M.
- Bogaerts, J. A.
- Bosman, M.
- Caron, B.
- Casado, P.
- Cataldi, G.
- Cavalli, D.
- Comune, G.
- Conde Muiño, P.
- Crone, G.
- Damazio, D.
- De Santo, A.
- Gomez, M. Diaz
- Di Mattia, A.
- Ellis, N.
- Emeliyanov, D.
- Epp, B.
- Falciano, S.
- Garitaonandia, H.
- George, S.
- Ghete, V.
- Goncalo, R.
- Haller, J.
- Kabana, S.
- Khomich, A.
- Kilvington, G.
- Kirk, J.
- Konstantinidis, N.
- Kootz, A.
- Lankford, A. J.
- Lowe, A.
- Luminari, L.
- Maeno, T.
- Masik, J.
- Meessen, C.
- Moore, R.
- Morettini, P.
- Negri, A.
- Nikitin, N.
- Nisati, A.
- Osuna, C.
- Padilla, C.
- Panikashvili, N.
- Parodi, F.
- Pasqualucci, E.
- Perez Reale, V.
- Pinfold, J. L.
- Pinto, P.
- Qian, Z.
- Resconi, S.
- Rosati, S.
- Sanchez, C.
- Santamarina, C.
- Scannicchio, D. A.
- Schiavi, C.
- Segura, E.
- De Seixas, J. M.
- Sivoklokov, S.
- Sobreira, A.
- Soluk, R.
- Stefanidis, E.
- Sushkov, S.
- Sutton, M.
- Tapprogge, S.
- Tarem, S.
- Thomas, E.
- Touchard, F.
- Usaib, G.
- Venda Pinto, B.
- Ventura, A.
- Vercesi, V.
- Wengler, T.
- Werner, P.
- Wheeler, S. J.
- Wickens, F. J.
- Wiedenmann, W.
- Wielers, M.
- Zobernig, G.
DOIAbstract
The ATLAS experiment at the Large Hadron Collider (LHC) will face the challenge of efficiently selecting interesting candidate events in pp collisions at 14 TeV center-of-mass energy, whilst rejecting the enormous number of background events. The High-Level Trigger (HLT = second level trigger and Event Filter), which is a software based trigger will need to reduce the level-1 output rate of approximate to 75 kHz to approximate to 200 Hz written out to mass storage. In this talk an overview of the current physics and system performance of the HLT selection for electrons and photons is given. The performance has been evaluated using Monte Carlo simulations and has been partly demonstrated in the ATLAS testbeam in 2004. The efficiency for the ...
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