Overview of the high-level trigger electron and photon selection for the ATLAS experiment at the LHC
Articolo
Data di Pubblicazione:
2006
Abstract:
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 signal channels, the rate expected for the selection, the global data preparation and execution times will be highlighted. Furthermore, some physics examples will be discussed to demonstrate that the triggers are well adapted for the physics programme envisaged at the LHC.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
ATLAS experiment; Combined test beam results; Online selection of electrons and photons; Nuclear and High Energy Physics; Nuclear Energy and Engineering; Electrical and Electronic Engineering
Elenco autori:
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.
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