The ATLAS b-Jet Trigger
Abstract
The online event selection is crucial to reject most of the events containing uninteresting background collisions while preserving as much as possible the interesting physical signals. The b-jet selection is part of the trigger strategy of the ATLAS experiment and a set of dedicated triggers was contributing to the event selection for the 2011 running. The b-jets acceptance is increased and the background reduced by lowering jet transverse energy thresholds at the first trigger level and applying b-tagging techniques at the subsequent levels. Different physics channels, especially topologies containing more than one b-jet where higher rejection factors are achieved, benefit from using the b-jet trigger. An overview of the b-jet trigger menu and performance on data is presented.
Cite
@article{arxiv.1111.4190,
title = {The ATLAS b-Jet Trigger},
author = {Per Hansson},
journal= {arXiv preprint arXiv:1111.4190},
year = {2011}
}
Comments
4 pages, 6 figures, conference proceedings for PIC2011