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 physics signals. The b-jet selection is part of the trigger strategy of the ATLAS experiment and a set of dedicated triggers is in place from the beginning of the 2011 data-taking period and is contributing to keep the total bandwidth to an acceptable rate. These triggers are used in many physics analyses, especially those with topologies containing more than one b-jet where higher rejection factors are achieved that benefit from requesting this trigger to be fired. An overview of the b-jet trigger menu and the performance on data is presented in this contribution.
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