PoS - Proceedings of Science
Volume 382 - The Eighth Annual Conference on Large Hadron Collider Physics (LHCP2020) - Poster session
Measurement of the combined online and offline $b$-jet identification efficiency with $t\bar{t}$ events using a likelihood method in the ATLAS detector
G. Bartolini* on behalf of the ATLAS collaboration
*corresponding author
Full text: pdf
Pre-published on: October 16, 2020
Published on: January 11, 2021
The identification of jets coming from the hadronization of $b$-quarks ($b$-tagging) is instrumental for many physics analyses performed at the Large Hadron Collider (LHC). ATLAS has $b$-tagging capability starting at High-Level Trigger stage, where $b$-tagging algorithms can process reconstructed tracks. Physics processes with $b$-jets in the final state, but no lepton or missing transverse energy, can benefit from using $b$-tagging at trigger level to maximise the signal efficiency. In Run 2, the $b$-jet trigger efficiency is measured using a likelihood-based method applied to data enriched in $t\bar{t}$ di-leptonic events. The $b$-tagging efficiency, for trigger algorithms as well as for the combination between trigger and offline algorithms, is extracted for jets in a transverse momentum range from 35 to 600 GeV, and data-to-simulation scale factors are derived.
DOI: https://doi.org/10.22323/1.382.0240
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.