Access Restriction

Author Casado, Mp
Source CERN Document Server
Content type Text
File Format PDF
Date Created 2011-10-15
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics ♦ Modern physics ♦ Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Detectors and Experimental Techniques ♦ tau trigger ♦ trigger efficiencies ♦ trigger menu ♦ TDAQ
Abstract The LHC has resumed operation in February 2011, colliding proton beams at a center of mass energy of 7 TeV. The first challenge consists on understanding the detector performance with increasing luminosity scenarios. In particular, the tau trigger system will be adapted, taking into account last year's experience. The tau trigger is a key element in the discovery of new physics, where tau lepton final states play a crucial role. It allows efficient collection of the physics signal, while keeping the rate of events within the acceptable bandwidth. This contribution will summarize the status of the tau trigger system at the different stages of data taking, emphasizing the key elements of the online selection and their performance. Methods for obtaining trigger efficiency curves from data will be shown and current results presented. Finally, we will present a summary of the trigger configuration run online during 2011 data taking, and how it maps the SM measurements or new physics searches planned for 2011 with hadronic tau decays in the final state.
Description Presented at: 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, Valencia, Spain, 23 - 29 Oct 2011
Learning Resource Type Presentation
Organization The ATLAS collaboration